1978 Dodge Tire Fitment Guide

1978 Dodge vehicles use a very broad range of tire sizes: E78-14, ER78-14, D78-14, DR78-14, and FR78-14 for Aspen; 195/70R14 for Challenger; FR78-15, GR78-15, and HR78-15 for Charger; FR78-15 for Diplomat; FR78-15, GR78-15, and HR78-15 for Magnum XE; H78-15, F78-15, GR78-15, and G78-15 for Monaco; 155/80R13 and 165/75R13 for Omni; multiple 15-, 16-, and 16.5-inch sizes for Pickup; 700-15, E78-15, G78-15, L78-15, and H78-15 for Ramcharger; and a mixed 15- and 16.5-inch range for Sportsman Wagon.

Those sizes do not all share the same wheel diameter, and that is the first thing to verify before narrowing the choice. Passenger cars in this group can use 13-, 14-, or 15-inch wheels, while Dodge trucks and vans may use 15-, 16-, or 16.5-inch wheels depending on the exact application. Rim-width guidance is available for many product-covered sizes, such as 4.50 to 7.00 inches for E78-14, 4.00 to 5.50 inches for some 155/80R13 tires, 5.50 to 8.00 inches for L78-15 and LR78-15, 6.00 to 6.50 inches for 800-16.5, and 6.50 to 6.75 inches for 950-16.5.

An alphanumeric size such as H78-15 uses an older domestic sizing system common on American vehicles through the 1960s and 1970s. The letter-and-number combination identifies the tire's size family, while the final number after the dash gives the wheel diameter in inches. If the code includes an R, as in GR78-15 or LR78-15, that marks a radial tire; if there is no R, as in H78-15, G78-15, or L78-15, it is a bias-ply size.

That distinction matters on 1978 Dodge applications because several model lines cross between bias-ply and radial-era choices within similar 15-inch fitment families. A Monaco, Pickup, or Sportsman Wagon owner may see size codes that look related but differ in construction, ride character, and period presentation. Once the exact size code on the car or in the factory literature is confirmed, the next step is to decide whether you want a traditional bias-ply appearance or a radial solution where the model used one.

No. 1978 Dodge spans compact cars, a sporty imported Challenger, midsize and full-size passenger cars, vans, pickups, and a truck-based Ramcharger, so tire sizing changes substantially from model to model. The Omni uses 13-inch metric radials, Aspen stays in 14-inch domestic-size families, Charger and Magnum XE use 15-inch radial alphanumeric sizes, and Pickup applications can jump all the way to 16-inch and 16.5-inch truck tires.

That means year and make alone are not enough to choose correctly for 1978 Dodge. You need the exact model first, and on Pickup or Sportsman Wagon applications you also need to confirm the wheel diameter because several different truck tire families can look similar on paper. If you are restoring a vehicle that may have had wheels changed over time, checking the sidewall on the current tires and measuring the wheel diameter before ordering is time well spent.

The right answer depends on which 1978 Dodge model you have and whether that model used both construction types. Aspen, Monaco, Pickup, and Sportsman Wagon can place you in a mix of bias-ply and radial-era size families, while Challenger and Omni are strictly radial in the sizes shown here and Ramcharger stays in bias-ply sizes. Bias-ply tires preserve the period look and steering feel expected on many late-1970s restorations, while radial choices generally reflect the direction the market was moving for everyday road use by that time.

Choose bias-ply when visual authenticity and era-correct character are higher priorities than modernized road feel. Choose radial when your exact model and wheel size call for a radial application and you want to stay consistent with that later-1970s fitment approach. On mixed-range vehicles such as Pickup or Sportsman Wagon, confirm the size code first because two tires may share the same rim diameter yet belong to completely different construction families and visual styles.

Sidewall choices vary widely across 1978 Dodge tire sizes. Whitewall options appear in several passenger and utility sizes, including wide whitewall versions in E78-14, H78-15, G78-15, L78-15, 700-15, 750-16, and 155/80R13, while narrow whitewall choices show up in 155/80R13, L78-15, and LR78-15. Blackwall choices are common across truck-oriented and sportier applications, including 195/70R14, 700-15, 800-16.5, 875-16.5, and 950-16.5.

For a 1978 Dodge restoration, the right sidewall depends on the model's role and the look you are trying to preserve. A formal full-size sedan or luxury-oriented coupe often suits a whitewall presentation, while a truck, Ramcharger, or more functional van build usually looks more natural on blackwalls. Because several sizes are available in more than one sidewall treatment, it helps to decide whether the goal is showroom-style appearance, road-use practicality, or a custom period look before narrowing the product choice.

1978 Dodge tire coverage includes Coker Classic, STA, Dunlop, Travelstar, BFGoodrich, Maxxis, Tornel, Firestone, and Lester, depending on size. E78-14 comes from Coker Classic and STA; 195/70R14 comes from Dunlop; 155/80R13 comes from Travelstar, BFGoodrich, Maxxis, and Tornel; H78-15 and G78-15 come from Coker Classic and STA; L78-15 comes from Coker Classic and BFGoodrich; LR78-15 comes from Firestone; 800-16.5, 875-16.5, and 950-16.5 come from STA; 700-15 comes from Firestone, BFGoodrich, and STA; and 750-16 comes from Firestone, Lester, and BFGoodrich.

Brand choice on a 1978 Dodge usually comes down to the exact size first, then the sidewall look and construction style available in that size family. Some sizes are covered by only one brand, while others offer a broader mix of heritage names and visual treatments. Once the size is confirmed, compare the available brands within that size for sidewall style, construction, and any published load or speed information that matters to how you use the vehicle.

Rim-width recommendations vary by size on 1978 Dodge vehicles. E78-14 spans 4.50 to 7.00 inches on one version and 5.0 to 6.0 inches on another; 155/80R13 fits ranges from 4.00 to 5.50 inches depending on brand; H78-15 fits 5.50 to 7.00 inches; G78-15 fits 5.00 to 7.00 inches; L78-15 and LR78-15 fit 5.50 to 8.00 inches; 800-16.5 fits 6.00 to 6.50 inches; 950-16.5 fits 6.50 to 6.75 inches; 700-15 fits 5.00 to 5.50 inches; and 750-16 fits 5.00 to 6.00 inches.

Those ranges are a useful check against the wheel already on the vehicle, especially for trucks and vans that may have been altered over the years. A tire can share the correct diameter and still be wrong for the wheel width if the wheel has been swapped. Confirm both diameter and width before ordering, and if a size has more than one product option, compare the specific tire you want rather than assuming every brand in that size uses the same approved wheel range.

Tube use depends on the exact 1978 Dodge tire size and product, not just the model name. Most passenger-car and truck products here do not carry a tube-type marker in the size itself, while the E78-14 family includes a tubeless STA Traxion version. Since tube status is not called out uniformly across every size, the safest approach is to match the tire's sidewall designation and the wheel's design before making a final setup decision.

That matters most on older utility wheels, split-era replacements, and restorations where the wheel history is uncertain. A tubeless tire still needs a wheel suited to tubeless service, and a wheel that was originally used with a tube should be inspected closely for condition before assuming a modernized setup. If you are working with original Pickup, Ramcharger, or van wheels, confirm the wheel style and the specific tire's sidewall markings rather than relying on a blanket assumption across the whole 1978 Dodge range.

No, because 1978 Dodge vehicles do not all share one wheel diameter. The year includes 13-, 14-, 15-, 16-, and 16.5-inch applications, and several models carry multiple sizes within the same model line. A Pickup alone can use 15-inch, 16-inch, or 16.5-inch tires depending on configuration, while an Omni's 13-inch radial fitment has nothing in common with a Monaco or Ramcharger wheel.

Original wheels can only be reused when the tire size matches the actual wheel diameter and falls within the tire's approved width range. That is why confirming the wheel on the vehicle itself matters just as much as confirming the model. If a restoration has changed wheels at some point in its life, the original handbook or build information may no longer reflect what is physically on the truck or car today, so measure first and choose the tire second.

A stored 1978 Dodge should be kept out of direct sunlight, away from ozone sources such as electric motors and battery chargers, and on a clean, dry surface. Correct inflation pressure matters during storage because underinflation encourages sidewall fatigue and flat spotting. Bias-ply tires, which appear on many 1978 Dodge truck, van, and full-size applications, are especially prone to temporary flat spotting when a vehicle sits for long periods.

Move the vehicle occasionally if possible, or use stands in a way that supports the chassis correctly and avoids long-term strain on one contact patch. If the car or truck stays on the ground, rolling it a short distance every few weeks can help. Storage is also the right time to inspect whitewalls for staining, clean the tires gently, and keep petroleum-based dressings away from the sidewalls on collector vehicles.

Tires on a 1978 Dodge should be judged more by age and condition than by mileage, because collector vehicles often accumulate very few miles while the rubber continues to age. A good rule is to begin careful evaluation around five to seven years and to treat ten years as a point where replacement deserves serious consideration even if tread remains. The DOT date code on the tire sidewall is the practical way to establish age.

That matters because many 1978 Dodge vehicles spend long stretches parked, trailered, or used only for shows and weekend drives. A tire can look visually decent and still have age-related hardening or internal deterioration that affects road manners and safety. If the age is borderline, compare it with how the vehicle is used: local event driving puts different demands on a tire than sustained highway trips in a full-size van, truck, or personal-luxury coupe.

Tires on a 1978 Dodge should be inspected before every drive and again before any longer outing. The essential checks are air pressure, visible cracking, cuts, bulges, uneven wear, and any sign that the tire is not holding pressure. On applications that may use tube-type or tube-era wheel setups, valve stems and any signs of tube-related leakage deserve extra attention as part of the routine.

Collector vehicles reward frequent visual checks because they may sit long enough for problems to develop between drives. A quick walk-around can catch a sidewall split, a low tire, or a weathered valve stem before it strands you or damages a rare wheel. Pay special attention to heavier Dodge trucks and vans, where age, load, and long storage intervals can combine to hide tire trouble until the vehicle is back on the road.

A 1978 Dodge Aspen could be found in both bias-ply and radial size families, including D78-14 and E78-14 bias-ply options as well as DR78-14, ER78-14, and FR78-14 radial sizes. That mix reflects the late-1970s transition period, when domestic cars could still appear with traditional alphanumeric bias-ply tires or increasingly common radial alternatives depending on application and market positioning. Bias-ply construction remained part of the original-era picture, and radial fitments were also fully at home in that model year.

For an accurate restoration, the goal is to match the exact size family, construction type, and sidewall treatment appropriate to the car's original configuration rather than assuming every Aspen used the same setup. A survivor car's paperwork, window sticker, or original sales literature can help narrow that down. If the car is being prepared for marque judging, consult Dodge clubs or model-specific restoration references to confirm whether a bias-ply or radial presentation is expected for your particular Aspen.

Yes, correct tire fitment matters on a shown 1978 Dodge because judges and knowledgeable enthusiasts often notice whether the tire's size family, construction type, and sidewall style match the period and the model's character. A wide whitewall on a truck-oriented application, a modern metric radial where a traditional alphanumeric bias-ply is expected, or the wrong wheel diameter can change the whole visual impression. Even when the car is not judged formally, tire choice strongly affects authenticity.

That does not mean every restored 1978 Dodge must wear the same style of tire. A personal-luxury Magnum XE, a basic Omni, and a work-oriented Pickup should not all be approached the same way. Match the tire to the restoration goal: concours originality, day-two period flavor, or a tasteful driver. If you plan to enter marque-specific events, check the event's standards in advance so you know whether radial conversions, blackwalls, or whitewall width choices will be viewed as appropriate.

On a 1978 Dodge, Firestone Steel Belted 721 in LR78-15 is a radial tire with a narrow whitewall and a 1,970-pound load rating at 32 psi, built to give a bias-era visual impression with radial construction. Coker Classic bias-ply offerings in comparable late-1970s Dodge utility and passenger sizes, such as H78-15 or L78-15, use true bias-ply construction and come in blackwall or wide whitewall forms depending on size. The visual theme can overlap, but the construction is fundamentally different.

That makes the choice less about appearance alone and more about how authentic you want the tire itself to be. A true bias-ply Coker Classic better suits restorations where original-type construction is part of the brief, while the Firestone radial appeals to owners who want a traditional look in a radial format. Because LR78-15 applies only to certain Pickup and Sportsman Wagon applications, confirm the actual size before using series choice as the deciding factor.

Many 1978 Dodge tires are appropriate for normal highway use when they are in good condition, properly inflated, and matched to the vehicle's correct size and wheel. The clearest published speed information here appears on radial passenger-car sizes such as 195/70R14 in 91V form, which carries a 149 mph ceiling, and 155/80R13 in 79T form, which carries a 118 mph ceiling. Most of the bias-ply truck and classic-car sizes shown do not carry a visible speed letter in the same way, so condition and intended use matter greatly.

The practical limit on a 1978 Dodge is often the vehicle itself rather than the tire alone, especially on heavier vans, trucks, and older suspension or brake systems. A fresh, correctly matched tire does not turn a vintage Dodge into a modern high-speed car. If your use includes sustained interstate driving, heat, or passenger loads, choose the exact size carefully, keep pressures correct, and treat the vehicle as the late-1970s machine it is rather than driving to the theoretical ceiling of a speed rating.

Inflation pressure on 1978 Dodge tires depends on the exact size and tire chosen. Published maximum load-and-pressure figures include E78-14 at up to 1,710 pounds at 60 psi on one version, H78-15 at 1,770 pounds at 32 psi or 1,830 pounds at 45 psi depending on product, G78-15 at 1,620 pounds at 32 psi, L78-15 and LR78-15 at 1,970 pounds at 32 psi, 800-16.5 at 2,045 pounds at 60 psi, 950-16.5 at 2,780 pounds at 60 psi, 700-15 at 1,700 pounds at 32 psi, and 750-16 from 1,660 pounds at 40 psi to 1,850 pounds at 48 psi.

Those figures are tire ratings, not a blanket recommendation to run every tire at its maximum pressure. For actual use, start with the factory recommendation in the owner's manual or period service literature for your exact 1978 Dodge model, then confirm that it aligns with the tire manufacturer's guidance for the specific reproduction or replacement tire. Do not borrow a pressure from one size to another, especially when moving between passenger-car, truck, and 16.5-inch utility applications.

Before a longer drive in a 1978 Dodge, inspect each tire for cracking, cuts, bulges, exposed cords, uneven wear, and correct cold inflation pressure. Check the valve stems, confirm the spare is usable, and make sure the tire age is still within a range you trust for the trip. If the vehicle uses older truck or van fitments, pay close attention to wheel condition and any sign that a tire has been overloaded or run underinflated in the past.

Tires are only one part of the pre-trip picture on a vehicle this age, but they are the part that carries the whole load to the road. It is wise to pair the tire inspection with a broader mechanical check of brakes, steering, cooling, belts, and lights before heading far from home. A 1978 Dodge in good tune can still be an enjoyable road car or truck, but longer trips reward preparation more than optimism.