1979 Nissan covered an unusually broad range of vehicles, from compact sedans and coupes to the sporty 280ZX and light-duty pickups that helped define the brand’s U.S. presence at the end of the 1970s. That variety means tire choice on a 1979 Nissan is not a one-size-fits-all exercise, because seven model lines use 13 distinct sizes across 13-, 14-, and 15-inch rims. Some passenger cars stayed with radial metric sizing, while others and the truck models also intersect with period-style bias-ply and alphanumeric fitments. Before choosing a tire, the most important first step is confirming your exact model, then matching the correct size and construction to how you use it.
Which Tire Size Is Right for Your 1979 Nissan
Thirteen tire sizes appear across the 1979 Nissan range, and they vary by model rather than carrying across every car and truck. The real decision starts with confirming the correct model and rim diameter first, then deciding whether your vehicle calls for a radial or a period-style bias-ply fitment. Understanding that distinction before choosing a product saves time and helps ensure the right match.
Year(s): 1979|Fit(s): 200, 210|Construction: Radial|Rim: 13 in
175/70R13 is a metric radial with a 175-millimeter section width, a 70-series profile, and a 13-inch rim diameter. This size is available as a blackwall from Avon, with an H speed rating to 130 mph and a rim width range of 4.5 to 6.0 inches. It is shared by the 1979 Nissan 200 and 210, making it one of the few sizes that crosses more than one model line. It suits owners who want a later-1970s radial fitment with a low-profile look for compact Nissan passenger cars.
Year(s): 1979|Fit(s): 210|Construction: Radial|Rim: 13 in
155R13 is a euro-metric radial whose code gives a 155-millimeter section width and a 13-inch rim diameter, with the profile conventionally understood as an 80-series type. This size is specific to the 1979 Nissan 210 and comes in blackwall form from Michelin and Dunlop; tube status varies by product, and both carry H speed ratings to 130 mph. Rim width coverage reaches 4.00 to 5.50 inches where published. It is a strong choice for a 210 owner who wants a narrow radial size consistent with late-1970s import-car practice.
6.15-13 is an antique-style numeric bias-ply designation that identifies a narrow-section tire for a 13-inch rim rather than using modern metric width and aspect-ratio language. This size is specific to the 1979 Nissan 210, though no current product selection appears here to add brand, sidewall, or tube detail. Its main appeal is period-style bias-ply character for owners pursuing an older driving feel and appearance. Buyers considering it should confirm the exact wheel and intended restoration direction before moving away from the radial alternatives used on the same model.
Year(s): 1979|Fit(s): 280ZX|Construction: Radial|Rim: 14 in
195/70R14 is a metric radial with a 195-millimeter section width, a 70-series profile, and a 14-inch rim diameter. Dunlop offers it as a blackwall Sport Classic with a V speed rating to 149 mph and a 1,356-pound load capacity. This size is specific to the 1979 Nissan 280ZX and fits the more performance-oriented character of Nissan’s S130 sports car. It is the right direction for owners who want a period-appropriate radial size with higher-speed capability for road use.
Year(s): 1979|Fit(s): 510|Construction: Radial|Rim: 13 in
165R13 is a euro-metric radial with a 165-millimeter section width and a 13-inch rim diameter, using the traditional implied 80-series profile common to the era. This size is specific to the 1979 Nissan 510 and is available in blackwall form from Michelin and Dunlop; tube status varies by product, H speed ratings reach 130 mph, and published rim width ranges span 4.50 to 6.00 inches. Load capacity reaches 1,047 pounds where stated. It fits owners who want a correct-era radial format for a compact rear-drive Nissan sedan.
6.45-13 is an antique-style bias-ply size built around older section-width convention for a 13-inch rim rather than modern metric labeling. This size is specific to the 1979 Nissan 510, and no current product range appears here to expand on sidewall style or service details. Its role is mainly for owners seeking an earlier-style appearance and bias-ply road manners instead of a radial conversion feel. That makes it a restoration-minded option rather than the default choice for a regularly driven 510.
Year(s): 1979|Fit(s): 720 Pickup|Construction: Radial|Rim: 14 in
185R14 is a euro-metric radial with a 185-millimeter section width and a 14-inch rim diameter, using the conventional tall-profile format associated with many import vehicles and light trucks of the period. This size is specific to the 1979 Nissan 720 Pickup and is available from Michelin, Phoenix, and Vredestein in blackwall and narrow whitewall styles; speed rating information varies by product, with H-rated versions carrying a 130 mph ceiling. Published rim width ranges run from 4.00 to 6.50 inches, and load capacity reaches 1,323 pounds where stated. It suits truck owners who want a radial 14-inch fitment with a more road-oriented appearance than the bias-ply alternatives.
Year(s): 1979|Fit(s): 720 Pickup|Construction: Bias Ply|Rim: 14 in
700-14 is a numeric bias-ply size in which the leading number represents nominal section width in the older inch-based system, mounted on a 14-inch rim. This size is specific to the 1979 Nissan 720 Pickup and comes from BFGoodrich in blackwall and narrow whitewall versions, with load capacity at 1,360 pounds at 32 psi and a rim width range of 5.00 to 5.50 inches. It is the natural choice for owners aiming for a period pickup look and traditional bias-ply response. Buyers should treat it as a style- and era-driven option rather than a direct substitute for the truck’s radial 14-inch sizes.
Year(s): 1979|Fit(s): 720 Pickup|Construction: Bias Ply|Rim: 15 in
G78-15 is an alphanumeric bias-ply size in which the letter and number indicate an older load and section class, while the 15 designates the rim diameter. This size is specific to the 1979 Nissan 720 Pickup and is available from Coker Classic and STA in wide whitewall and blackwall styles, with published load capacity reaching 1,620 pounds at 32 psi and rim width coverage of 5.00 to 7.00 inches where stated. Moving to this fitment also means moving to a 15-inch wheel, so it is not interchangeable with the truck’s 14-inch sizes. It appeals most to owners building a distinct period-custom or vintage truck presentation.
195R14 is a euro-metric radial with a 195-millimeter section width and a 14-inch rim diameter, using the implied tall-profile convention common to the period. This size is specific to the 1979 Nissan 720 Pickup, though no current product selection appears here to add brand, sidewall, or service-detail variety. Its place in the range suggests a slightly wider radial alternative within the truck’s 14-inch wheel family. It is best considered by owners who have already confirmed their truck’s exact wheel and original fitment direction.
Year(s): 1979|Fit(s): 810|Construction: Radial|Rim: 14 in
185/70R14 is a metric radial with a 185-millimeter section width, a 70-series profile, and a 14-inch rim diameter. It is specific to the 1979 Nissan 810 and is available from BFGoodrich, Avon, Dunlop, and Michelin in blackwall and wide whitewall styles; speed ratings vary by product, with H-rated versions at 130 mph and a V-rated Michelin option at 149 mph. Published rim width ranges span 4.5 to 6.5 inches, and stated load capacities run up to 1,235 pounds where shown. It works well for owners balancing late-1970s luxury-sedan appearance with a broad mix of modern radial product choices.
GR78-15 is an alphanumeric radial, with the R in the code identifying radial construction and the 15 marking the rim diameter. This size is specific to the 1979 Nissan Pickup, though no current product range appears here to add brand, sidewall, or speed-rating detail. Its importance is that it combines period alphanumeric sizing with radial construction rather than bias-ply construction. That makes it a useful path for owners who need the correct 15-inch format for the truck without stepping into a bias-ply tire.
Year(s): 1979|Fit(s): Pickup|Construction: Bias Ply|Rim: 14 in
E78-14 is an alphanumeric bias-ply size using the older letter-and-number convention, with a 14-inch rim diameter. This size is specific to the 1979 Nissan Pickup and is available from Coker Classic and STA in wide whitewall and blackwall styles, with published load capacity ranging from 1,400 pounds at 32 psi up to 1,710 pounds at 60 psi depending on product. Rim width coverage reaches 4.50 to 7.00 inches where published. It best fits owners seeking a traditional bias-ply truck tire or a custom-style whitewall presentation on a 14-inch wheel.
Seven Nissan model lines are covered for 1979, spanning compact cars, a grand-touring sports coupe, a larger sedan, and two pickup families. Tire size does vary by model, and in several cases a single model can use more than one size or even more than one construction type, so identifying the exact model is the first step before choosing a tire. Select a model below to narrow the fitment history and see the products that match it.
1979 Nissan 200
The Nissan 200 was one of the brand’s compact passenger-car offerings during a period when Japanese imports were gaining ground through efficiency, tidy dimensions, and straightforward engineering. Its fitment stays simple here, with a single 13-inch radial size, which keeps the focus on choosing the right product character rather than sorting through multiple wheel diameters.
The 210 was Nissan’s economical small car, sold at a time when buyers wanted compact dimensions and dependable everyday transportation. It uses 13-inch tires throughout, but the size choices span both radial and bias-ply formats, so a 210 owner needs to decide whether the goal is an era-style presentation or a more typical late-1970s radial setup.
The 280ZX carried Nissan’s Z-car line into a more refined grand-touring direction, blending sports-car image with increased comfort and highway capability. Its single fitment here is a 14-inch radial, which matches the car’s more performance-oriented mission and keeps size selection straightforward.
By 1979, the 510 name continued in Nissan’s compact rear-drive family-car space, long after the original 510 had earned its reputation among enthusiasts. This application stays on 13-inch wheels, with both radial and bias-ply paths available, giving owners room to choose between a more era-faithful feel and a more familiar later radial format.
The 720 Pickup represented Nissan’s move toward the modern compact truck market, serving buyers who needed utility in a smaller, more maneuverable package. Its fitments span both 14-inch and 15-inch wheels, with radial and bias-ply choices depending on the exact setup, so wheel diameter matters just as much as construction on this model.
The 810 sat higher in Nissan’s passenger-car lineup, offering a larger, more upscale package than the compact models below it. Its tire fitment centers on a 14-inch radial size, which suits the car’s more refined, near-luxury role and gives owners several sidewall and brand directions within the same basic dimensions.
The Nissan Pickup served the compact-truck market with simple, durable utility and broad appeal among buyers who wanted a practical work vehicle. Its fitments split between a 15-inch radial alphanumeric size and a 14-inch bias-ply alphanumeric size, so the correct wheel diameter must be confirmed before any further tire decision is made.
Associated Tire Sizes:
GR78-15 — radial, period alphanumeric truck fitment
E78-14 — bias-ply, traditional truck or custom style
Twenty-three products are available across 13 tire sizes for 1979 Nissan vehicles. 175/70R13 uses Avon radial blackwalls; 155R13 uses Michelin and Dunlop radial blackwalls; 195/70R14 uses a Dunlop radial blackwall; 165R13 uses Michelin and Dunlop radial blackwalls; 185R14 uses Michelin, Phoenix, and Vredestein radial blackwall and narrow whitewall options; 700-14 uses BFGoodrich bias-ply blackwall and narrow whitewall choices; G78-15 uses Coker Classic and STA bias-ply wide whitewall and blackwall options; 185/70R14 uses BFGoodrich, Avon, Dunlop, and Michelin radial blackwall and wide whitewall options; E78-14 uses Coker Classic and STA bias-ply wide whitewall and blackwall options. Confirm the exact size and construction first, since tube marking and speed rating details can vary within some radial sizes.
These answers focus on how 1979 Nissan tire fitment changes from model to model, when radial and bias-ply choices overlap, and what sidewall, speed-rating, and setup details matter before a restoration car, sports coupe, or compact pickup goes back on the road.
Size Basics & Fitment
What tire sizes fit 1979 Nissan vehicles?
1979 Nissan vehicles use 13 distinct tire sizes across seven model lines: 175/70R13, 155R13, 6.15-13, 195/70R14, 165R13, 6.45-13, 185R14, 700-14, G78-15, 195R14, 185/70R14, GR78-15, and E78-14. The 200 uses 175/70R13, the 210 uses 175/70R13, 155R13, and 6.15-13, the 280ZX uses 195/70R14, the 510 uses 165R13 and 6.45-13, the 720 Pickup uses 185R14, 700-14, G78-15, and 195R14, the 810 uses 185/70R14, and the Pickup uses GR78-15 and E78-14. Rim diameters span 13, 14, and 15 inches depending on model and size.
That means year and make alone are not enough for a confident tire choice on a 1979 Nissan. Start by identifying the exact model, then confirm whether it uses a 13-, 14-, or 15-inch wheel before comparing tread style, sidewall appearance, or construction type. Where rim width guidance is published, it varies by size, such as 4.00 to 5.50 inches for 155R13, 4.50 to 6.00 inches for 165R13, 5.00 to 5.50 inches for 700-14, and 5.00 to 7.00 inches for G78-15. That wheel check avoids mixing up similar-looking radial and bias-ply options that were never intended to mount on the same rim diameter.
What does 6.15-13 mean on a 1979 Nissan tire?
On a 1979 Nissan, 6.15-13 is an older bias-ply size used on the 210. The 13 identifies the rim diameter in inches, while the 6.15 indicates the tire’s nominal section size in the older inch-based convention rather than a modern metric width and aspect ratio. It does not decode the same way as a metric radial such as 155R13 or 175/70R13, and it carries the more traditional carcass shape and driving character associated with bias-ply construction.
That matters because a 210 owner comparing 6.15-13 against the model’s radial options is deciding more than just dimensions. A bias-ply tire changes the look, sidewall shape, and road feel in ways many restorers want, while a radial usually aligns more closely with later-period everyday use. If your 1979 Nissan 210 still has original-style wheels or a restoration focus, 6.15-13 may be the right direction. If the car is driven more regularly, confirm whether one of the 13-inch radial sizes better matches your goals before committing.
Do all 1979 Nissan models use the same tire size?
No, 1979 Nissan models do not share one universal tire size. Even within the same year, compact cars, the 280ZX, the 810, and the pickup models use different dimensions, and some models have more than one acceptable size. The 200 and 210 overlap on 175/70R13, but the 210 also branches into 155R13 and 6.15-13. The 720 Pickup spans four sizes across both 14- and 15-inch wheels, while the Nissan Pickup splits between GR78-15 and E78-14.
For a buyer, that means model identification comes before almost every other tire decision on a 1979 Nissan. A 280ZX owner shopping by year alone could easily land on a compact-car 13-inch size, while a truck owner could confuse a 14-inch bias-ply fitment with a 15-inch radial one. Once the model is confirmed, the tire choice becomes much more manageable: verify rim diameter, then decide whether you want a radial or bias-ply construction and the sidewall style that best fits the vehicle’s look and intended use.
Buying the Right Tire
Should I choose the 155R13 or the 6.15-13 for my 1979 Nissan 210?
For a 1979 Nissan 210, 155R13 and 6.15-13 represent two different directions rather than two versions of the same tire. The 155R13 is a radial 13-inch size with blackwall options from Michelin and Dunlop and H speed ratings to 130 mph. The 6.15-13 is a bias-ply 13-inch size that uses older sizing convention and carries the period-style stance and feel associated with bias-ply construction. Both belong to the 210, but they serve different owner priorities.
Choose 6.15-13 when the goal is a more traditional late-1960s and 1970s small-car appearance or a restoration-oriented presentation. Choose 155R13 when you want the narrow original-type look in a radial format that feels more familiar to modern drivers. The key is to decide whether your 1979 Nissan 210 is being judged as a period-correct restoration, preserved as a survivor, or used more regularly on today’s roads. Once that direction is clear, the right size becomes much easier to narrow down.
What sidewall styles are available for 1979 Nissan tires?
1979 Nissan tires are available in blackwall, narrow whitewall, and wide whitewall form depending on size. Many of the compact-car and sports-car radial sizes, such as 175/70R13, 155R13, 165R13, and 195/70R14, are blackwall only. The 185R14 radial for the 720 Pickup appears in blackwall and narrow whitewall, while 185/70R14 for the 810 appears in blackwall and wide whitewall. Bias-ply truck sizes such as 700-14 and E78-14 span blackwall and whitewall treatments, and G78-15 reaches into wide whitewall territory.
Blackwalls are usually the most natural visual match for 1979 Nissan sporty and economy-oriented applications, especially the 200, 210, 510, and 280ZX. Whitewalls tend to make more sense on luxury-leaning or custom-style builds, or on trucks where the owner wants a stronger period visual statement. On a 1979 Nissan 810, a whitewall can reinforce the sedan’s upscale late-1970s character, while on a 720 Pickup or Nissan Pickup it can shift the look toward custom or vintage-truck territory. Sidewall style does not replace fitment; it comes after the correct size and construction are confirmed.
What brands make tires for 1979 Nissan vehicles?
1979 Nissan fitments are covered by Avon, Michelin, Dunlop, Phoenix, Vredestein, BFGoodrich, Coker Classic, and STA, depending on size. Avon appears in 175/70R13 and 185/70R14. Michelin and Dunlop cover several metric radial passenger-car sizes, including 155R13, 165R13, and 185/70R14, while Dunlop also supplies 195/70R14 for the 280ZX. BFGoodrich covers 700-14 and part of the 185/70R14 range, Phoenix and Vredestein appear in 185R14, and Coker Classic and STA support the alphanumeric and numeric bias-ply truck sizes.
That spread matters because a 1979 Nissan buyer is not choosing from one uniform product family. Smaller passenger cars and the 280ZX lean toward European-style radial offerings with blackwall presentation, while truck fitments open up more bias-ply and whitewall choices. If brand heritage matters to your project, a Michelin, Dunlop, Avon, or Vredestein radial may suit a road-focused import restoration, while BFGoodrich, Coker Classic, and STA fit more naturally into period-style domestic bias-ply and custom-truck aesthetics. Brand should be the final filter after you have the right size, wheel diameter, and construction type settled.
Fitting & Setup
What rim width do 1979 Nissan tires require?
Rim width guidance for 1979 Nissan tires varies by size. Published ranges include 4.5 to 6.0 inches for 175/70R13, 4.00 to 5.50 inches for 155R13, 4.50 to 6.00 inches for 165R13, 4.00 to 6.50 inches for 185R14, 5.00 to 5.50 inches for 700-14, 5.00 to 7.00 inches for G78-15, 5.00 to 6.50 inches for one 185/70R14 application, 4.5 to 6.0 inches for another 185/70R14 application, and 4.50 to 7.00 inches for E78-14. Some products within the same nominal size show slightly different approved widths.
That is why wheel measurement matters before any tire is chosen for a 1979 Nissan. The correct rim diameter is only half the picture; a wheel can be the right diameter and still be too narrow or too wide for a specific tire design. This comes up most often when comparing truck tires such as 700-14, E78-14, and G78-15, or when choosing among multiple 185/70R14 radials for the 810. Measure the actual wheel, then compare it against the published range for the exact tire you want rather than assuming every product in the same size mounts the same way.
Do 1979 Nissan tires require inner tubes?
Inner-tube requirements on 1979 Nissan tires depend on the exact size and product. Some metric radial passenger-car sizes clearly show tubeless marking, including Michelin versions of 155R13 and 165R13 and a Michelin 185/70R14. Other products in those same sizes do not carry the same marking in the size description, so tube status varies by product rather than remaining uniform across the whole size family. The bias-ply truck sizes shown here do not all use one common tube note either, including an STA E78-14 identified as tubeless.
The practical rule is to check the sidewall marking and wheel type together before fitting a 1979 Nissan tire. A tubeless-design tire still depends on a wheel in suitable condition to seal properly, while some older wheels or restoration scenarios may still involve tube use even when the tire itself is not inherently tube-type. This matters most on vehicles that cross eras in tire technology, such as the 210, 510, and the pickup models. Confirm the exact tire marking and inspect the wheel before deciding whether a tube belongs in the setup.
Can the original 1979 Nissan 210 wheels be used with all 1979 Nissan 210 tire sizes?
The 1979 Nissan 210 uses 13-inch tire sizes throughout, including 175/70R13, 155R13, and 6.15-13, so rim diameter compatibility stays consistent within that model. That means the original wheel diameter is not the obstacle when comparing those choices. The more important variables are the wheel’s actual width and the construction type, since published rim width guidance appears for the radial sizes and the bias-ply option follows a different sizing convention.
In practice, a 1979 Nissan 210 owner can often stay on the original 13-inch wheels while deciding between radial and bias-ply directions, but the wheel should still be measured and inspected first. A narrow factory wheel may align naturally with 155R13, while a wider one may better suit 175/70R13 depending on the exact product. If you are moving to 6.15-13 for a more period-style presentation, check clearances and wheel condition carefully rather than assuming every 13-inch tire will behave the same on the same rim.
Maintenance, Storage & Longevity
How should I store a 1979 Nissan when the tires are fitted?
A 1979 Nissan should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, electric motors, battery chargers, furnaces, and other ozone-producing equipment. Clean, dry floors are better than damp surfaces, and the vehicle should either be moved periodically or supported in a way that reduces long-term static loading. Bias-ply tires such as 6.15-13, 6.45-13, 700-14, G78-15, and E78-14 tend to flat-spot more readily during storage than the radial sizes used elsewhere in the 1979 Nissan range.
Storage habits matter because many 1979 Nissan vehicles are driven only occasionally, not as daily transportation. A compact 210 or 510 on bias-ply tires may need more attention after sitting than a radial-equipped 280ZX or 810, especially in cooler weather. Keep inflation pressure checked during storage, avoid parking with the wheels turned hard against suspension stops, and inspect for sidewall weathering before the first drive of the season. Good storage practice extends the useful life of the tires and helps preserve ride quality when the car or truck goes back into service.
How long do tires on a 1979 Nissan typically last?
On a 1979 Nissan, tire age usually matters more than tread depth because collector and hobby vehicles often cover limited mileage. A sensible rule is to begin evaluating tires closely once they reach about five to seven years from manufacture and to treat ten years as a point where replacement deserves serious consideration regardless of remaining tread. The DOT date code on the sidewall is the best guide to actual age. That principle applies across both radial and bias-ply constructions in the 1979 Nissan range.
A lightly used 280ZX or 810 may still wear old-looking but tread-rich tires that are no longer ideal for road use, and the same is true for a garage-kept 720 Pickup with vintage-looking bias-ply rubber. Rubber hardens with age, sidewalls can crack, and internal deterioration does not always show up immediately from the outside. If your 1979 Nissan still wears tires of uncertain age, start by checking date codes before assuming they are serviceable. Age-based replacement is usually the smarter standard for collector vehicles than waiting for tread wear alone.
How often should tires on a 1979 Nissan be inspected?
Tires on a 1979 Nissan should be inspected before every drive and again before any longer trip. Look for sidewall cracking, tread separation, punctures, bulges, irregular wear, and pressure loss. Any vehicle using tube-type or tube-related vintage setups also deserves a close look at valve stems and any slow leak behavior. On pickup sizes with higher load capacity, such as E78-14 or G78-15, extra attention to sidewall condition is especially important if the truck has been carrying cargo or sitting for long periods.
Frequent inspection is one of the easiest ways to protect an older Nissan from preventable roadside trouble. Collector cars often sit for weeks, and issues that were not present at the last drive can show up before the next one. A 280ZX headed onto the highway, a 210 going to a local show, and a 720 Pickup being put back to work all benefit from the same routine: cold-pressure check, visual sidewall scan, tread inspection, and a quick look at the spare. Those small habits catch problems long before they become failures.
Restoration & Authenticity
What tires were originally fitted to the 1979 Nissan 210?
A 1979 Nissan 210 could legitimately intersect with more than one tire direction, including radial sizes such as 175/70R13 and 155R13 and a bias-ply size such as 6.15-13. By 1979, radial construction was already well established on many imported passenger cars, so a radial fitment is completely in step with the period. The presence of a bias-ply alternative matters mostly for owners pursuing a very specific restoration look or wheel setup rather than for every 210 on the road.
For restoration work, the right answer often depends on market, trim, and how closely you are trying to replicate the car’s original delivery condition. Start with the exact wheel diameter and any surviving factory paperwork, then compare that to the tire size family used on your 1979 Nissan 210. If the car will be judged, confirm expectations with a Nissan marque club or period literature rather than assuming all 210s were equipped identically. The best restoration result usually comes from matching size, construction, and sidewall style to the specific car, not just the model name.
Does correct tire fitment matter for showing a 1979 Nissan?
Yes, correct tire fitment matters when a 1979 Nissan is being shown, especially in preservation, stock, or concours-oriented classes. Judges and knowledgeable enthusiasts often notice whether the size, construction type, and sidewall presentation suit the era and model. A radial blackwall generally looks natural on many late-1970s Nissan passenger cars, while a bias-ply truck tire or an aggressive whitewall can shift the appearance toward a different period style or a custom presentation. The more original the class, the more those details tend to matter.
That does not mean every show car needs the same answer. A 280ZX on a blackwall radial, an 810 on a tasteful whitewall radial, and a customized 720 Pickup on a wide-whitewall bias-ply tire can all make sense if the rest of the vehicle supports that look. The key is internal consistency. If your 1979 Nissan is headed for judged events, check the event standards and ask marque experts whether they emphasize exact construction, sidewall treatment, or both. Tire fitment is often one of the easiest details to get right and one of the quickest visual clues when it is wrong.
What is the difference between Michelin XAS and Dunlop SP Sport Aquajet for a 1979 Nissan?
For a 1979 Nissan using 155R13 or 165R13, Michelin XAS-family tires and Dunlop SP Sport Aquajet tires overlap in size but differ in their exact product details. Both appear as blackwall radials with H speed ratings to 130 mph. Michelin examples in these sizes carry tubeless marking and publish rim-width guidance of 4.00 to 5.50 inches in 155R13 and 4.50 to 6.00 inches in 165R13, while the Dunlop products shown in those same sizes emphasize radial construction and include stated load capacities of 937 pounds in 155R13 and 1,047 pounds in 165R13.
That means the choice between them on a 1979 Nissan is less about headline size and more about the exact product profile that best suits your car and wheel. If you want a tire with clearly published rim-width guidance and classic Michelin XAS heritage, the Michelin route may be appealing. If load information and Dunlop’s period sport-radial character matter more, the Aquajet may be the better fit. Either way, compare the exact wheel width and the intended use of the car before choosing between two tires that share the same nominal size but do not read identically in their service details.
Safety & Road Use
Are 1979 Nissan tires safe for highway driving?
Yes, 1979 Nissan tires can be appropriate for highway driving when the correct size, construction, age, and condition all align. Several radial passenger-car sizes carry modern speed ratings, including H-rated options with a 130 mph ceiling in 155R13, 165R13, 175/70R13, 185R14, and 185/70R14, plus V-rated options to 149 mph in 185/70R14 and 195/70R14. Bias-ply sizes such as 700-14, G78-15, and E78-14 are a different category and should be approached with the expectations that come with traditional construction, older vehicle dynamics, and truck-style use cases.
For most road use, the condition of the vehicle may matter as much as the tire rating itself. A 1979 Nissan 280ZX with fresh V-rated radials can still be limited by suspension, alignment, brakes, or age-related component wear, and an older pickup on bias-ply tires should be driven with period-appropriate expectations. The best safety standard is to match the tire to the model, inspect it carefully, and keep speeds consistent with both the tire’s rating and the vehicle’s overall mechanical condition. Highway capability starts with the whole package, not the speed letter alone.
What inflation pressure should I use for 1979 Nissan tires?
Inflation pressure on a 1979 Nissan should not be guessed from one size and applied to another. Some tire sizes carry explicit load-and-pressure figures, such as 185R14 at 1,323 pounds up to 51 psi depending on product, 700-14 at 1,360 pounds at 32 psi, G78-15 at 1,620 pounds at 32 psi, 185/70R14 at 1,201 pounds at 35 psi or 1,235 pounds where stated, and E78-14 from 1,400 pounds at 32 psi up to 1,710 pounds at 60 psi depending on product. Those figures describe tire capacity at stated pressure, not your Nissan’s factory operating pressure recommendation.
The right approach is to begin with the vehicle manufacturer’s pressure guidance for your exact 1979 Nissan model and then compare it with the tire maker’s service information for the specific product you choose. A 280ZX, an 810, and a pickup do not ask the same thing of a tire, even when the sizes look similar. If the car or truck has been modified, weighed differently than stock, or fitted with a non-original size, use the factory recommendation as a baseline and then consult the tire maker’s technical guidance rather than transferring pressure numbers across unrelated sizes.
What should I check before taking a 1979 Nissan on a longer drive?
Before a longer drive in a 1979 Nissan, inspect all four tires and the spare for cracking, bulges, cuts, tread separation, embedded objects, and uneven wear. Check cold inflation pressure, confirm that the valve stems are in good condition, and pay extra attention to any vehicle using vintage tube-related tire setups or older bias-ply construction. On truck applications such as the 720 Pickup or Nissan Pickup, also consider the load you plan to carry so the tire size and condition match the job.
A longer trip in a late-1970s Nissan should also include a broader mechanical review. Wheel-bearing noise, suspension looseness, brake pull, or alignment problems can all show up through the tires before they become obvious elsewhere. If your 1979 Nissan has sat for a season, drive it locally first and recheck pressures and temperatures before committing to distance. Tire readiness is only one part of the equation, but it is the part in constant contact with the road. A thorough pre-drive inspection turns a classic-car outing from a gamble into a plan.
