1979 Ford Tire Fitment Guide

1979 Ford vehicles used a very broad range of sizes, including HR78-14, H78-15, L78-15, LR78-15, 700-15, 195R14, 6.00-14, E70-14, GR78-14, FR78-14, G78-15, 8.75R16.5, 875-16.5, 800-16.5, 8.00R16.5, 950-16.5, F78-15, 750-16, B78-14, BR78-14, CR78-14, DR78-14, DR70-14, 145R12, 155R12, GR78-15, HR78-15, ER78-14, GR70-15, 215R15, HR70-15, B78-13, C78-13, C78-14, 190/65R390, A70-13, A78-13, BR70-13, and BR78-13. They were not shared across all models. Rim diameters span 12-inch, 13-inch, 14-inch, 15-inch, 16-inch, 16.5-inch, and 390mm applications.

That means a 1979 Ford buyer should start with the exact model name before thinking about brand or sidewall style. A Fiesta, Mustang II, LTD, Bronco, F-250, and E-250 Club Wagon can all be 1979 Fords, but they sit on very different tire families. Once the model is confirmed, compare the wheel diameter on the vehicle to the size code and then narrow the choice by construction type and intended use.

On a 1979 Ford, 700-15 is a numeric bias-ply size. The 700 refers to the nominal section width in the older numeric system, and the 15 refers to the wheel diameter in inches. Within the 1979 Ford range, 700-15 is used on the Bronco, F-100, and F-150, all of which are truck-based applications rather than passenger-car models.

That older numeric format matters because it points you toward a traditional bias-ply tire family instead of a later radial code. For a truck owner, 700-15 is usually less about modern sizing conventions and more about preserving a vintage profile and wheel relationship. Confirm the wheel is actually a 15-inch application and check the tire's rim-width recommendation before moving ahead with a specific product.

No, 1979 Ford models do not use the same tire size. Ford's range that year included subcompacts, compact pickups, midsize and full-size sedans, full-size utility vehicles, vans, and heavy-duty trucks, and the tire spread reflects that. Some sizes are shared within related families, such as H78-15, L78-15, LR78-15, and 700-15 across certain truck and van models, while others are unique to a single model such as 145R12 for Fiesta or 190/65R390 for Mustang II.

The practical result is that year and make alone are not enough for a safe fitment decision on 1979 Ford. You need the model first, and on several models you also need the wheel diameter because one model can span more than one tire family. That is especially true on F-250, LTD II, Fairmont, Mustang II, Pinto, and Courier applications where more than one size type appears.

For a 1979 Ford that uses either L78-15 or LR78-15, the difference is mainly construction rather than basic wheel diameter. L78-15 is a bias-ply size used on Bronco, E-100 Club Wagon, E-150 Club Wagon, F-100, and F-150. LR78-15 is a radial size used on Bronco, E-100 Club Wagon, E-150 Club Wagon, and F-150, and the available LR78-15 product here is a bias-look radial with a narrow whitewall and a 1,970-pound load rating at 32 psi.

Choose L78-15 when the goal is a more traditional late-1970s truck or van presentation with classic bias-ply proportions and sidewall styling options. Choose LR78-15 when your vehicle calls for that size and you want radial construction while keeping an era-appropriate appearance. Either way, confirm that the model is one of the Ford applications that actually used that size and verify the wheel matches the tire's recommended rim-width range.

1979 Ford tires cover a wide sidewall spread depending on the size. H78-15 appears in wide whitewall and blackwall form, L78-15 in blackwall, narrow whitewall, and wide whitewall, 700-15 in blackwall and wide whitewall, E70-14 in pin-white-stripe, redline, and RWL, G78-15 in wide whitewall and blackwall, 750-16 in blackwall and wide whitewall, and GR70-15 in pin-white-stripe and RWL. Metric and TRX radial offerings such as 145R12 and 190/65R390 are blackwall.

The right sidewall usually follows the personality of the vehicle and the kind of restoration you are pursuing. A full-size LTD or wagon may look at home with a whitewall, a sporty late-1970s package may call for stripes or redlines, and many truck and van applications lean naturally toward blackwalls. If show authenticity matters, compare the sidewall style to period photos, original paperwork, or marque-club guidance for your exact model and trim.

1979 Ford fitments are covered by several brands, including Coker Classic, BFGoodrich, Firestone, STA, Goodyear, Lester, and Michelin. The mix depends on size: H78-15 uses Coker Classic and STA, L78-15 uses Coker Classic and BFGoodrich, 700-15 uses Firestone, BFGoodrich, and STA, E70-14 uses Firestone and Goodyear, G78-15 uses Coker Classic and STA, 750-16 uses Firestone, Lester, and BFGoodrich, while 145R12 and 190/65R390 are represented by Michelin.

That brand spread reflects how broad the 1979 Ford lineup really was. Full-size car, truck, van, compact import-based, and TRX metric applications all draw from different tire traditions, so the right brand choice often follows the size family first. Once the size is settled, compare sidewall style, load rating, rim-width range, and overall appearance rather than assuming every brand offers the same kind of tire for every Ford application.

Rim-width requirements vary by tire size on 1979 Ford applications. H78-15 fits 5.50 to 7.00-inch rims, L78-15 fits 5.50 to 8.00-inch rims, 700-15 fits 5.00 to 5.50-inch rims, E70-14 fits about 6.00 to 7.00-inch rims, G78-15 fits 5.00 to 7.00-inch rims, 800-16.5 fits 6.00 to 6.50-inch rims, 950-16.5 fits 6.50 to 6.75-inch rims, 750-16 fits 5.00 to 6.00-inch rims, 145R12 fits a 4.5-inch rim, and GR70-15 ranges from 7.0 to 8.0 inches depending on the product.

Those ranges are why wheel verification matters before ordering, especially on trucks and specialty wheel packages. Two tires can share a wheel diameter and still call for different rim widths, and that can affect both appearance and proper mounting. On any 1979 Ford that has changed hands several times, checking the actual wheel on the vehicle is more reliable than assuming it still carries its original equipment width.

Some 1979 Ford tires are clearly tubeless, while many older-style sizes should be treated carefully until the exact sidewall marking is confirmed on the specific tire. The 145R12 Michelin MX is marked TL, and the 190/65R390 Michelin TRX-B is also marked TL, so both are tubeless products. Many bias-ply and alphanumeric sizes here do not carry a TL or TT marker in the size field, so tube status can vary by product and by wheel design rather than by size name alone.

The safest approach is to match the tire's own sidewall marking to the wheel you plan to use. Older wheels may have condition or design factors that affect whether tubeless service is advisable even when a modern reproduction tire can run that way. If your 1979 Ford uses a truck, van, or classic passenger-car wheel of uncertain history, inspect the wheel closely and verify the intended setup before mounting.

Original 1979 Ford wheels cannot be treated as universal across all tire sizes. The model range spans multiple diameters, including 12-inch, 13-inch, 14-inch, 15-inch, 16-inch, 16.5-inch, and 390mm wheels, so a tire only works when its bead seat matches the actual wheel diameter. A 190/65R390 TRX tire, for example, requires a 390mm wheel and cannot substitute onto a 15-inch rim.

Even when two sizes share a nominal diameter, wheel width still needs to be checked against the tire's approved range. That matters on 15-inch Ford cars and trucks, where several different size families appear, and even more on F-250 and van applications where 16-inch and 16.5-inch setups can both exist. Before reusing original wheels, verify the stamped or measured diameter and compare the width to the tire you intend to mount.

A stored 1979 Ford should be kept out of direct sunlight, away from electric motors, battery chargers, welders, furnaces, and other ozone-producing equipment, and in a dry space with stable temperatures. Keep the tires clean, maintain proper inflation, and move the vehicle periodically so the same section of tread is not carrying the load for months at a time. Bias-ply tires are especially prone to temporary flat-spotting during long static storage, while any vintage-style sidewall can age faster when exposed to heat and ozone.

If the car or truck will sit for a season, many collectors either roll it occasionally or support it in a way that reduces prolonged load without leaving the suspension fully hanging. A breathable cover and a clean floor also help. Storage habits matter just as much as mileage on a collector vehicle, because many 1979 Ford models are driven infrequently and age becomes the bigger concern.

Tire life on a 1979 Ford is usually better judged by age than by miles. Collector vehicles often wear out their tires chemically long before they wear them out mechanically, so a tire should be evaluated closely once it reaches about five to seven years of age and considered for replacement around the ten-year mark regardless of remaining tread. The DOT date code on the sidewall is the best reference point for true age.

That guideline is especially important on hobby-driven Fords that see short trips, car shows, or occasional highway use. Good tread depth can create a false sense of security when the internal structure and sidewall rubber are simply old. If your 1979 Ford has sat for long periods or still rides on an older spare, treat every tire on the vehicle as age-sensitive, not just the ones with visible wear.

Tires on a 1979 Ford should be inspected before every drive and again before any longer outing. Check for sidewall cracking, cuts, bulges, irregular tread wear, embedded objects, and pressure loss, and make sure the valve stems are in equally good condition. On any setup that may involve tubes or older wheels, stem condition and slow air loss deserve extra attention.

Regular inspection is especially valuable on collector vehicles because weeks or months may pass between drives. Problems that would be caught quickly on a daily driver can sit unnoticed on a hobby car or truck until the next event. A short walkaround with a gauge and flashlight takes only a few minutes and can prevent roadside trouble on a vehicle that may already demand more careful mechanical preparation.

A 1979 Ford Bronco used truck-oriented sizes such as H78-15, L78-15, LR78-15, and 700-15, depending on the exact application. In period context, both bias-ply and radial constructions were part of the late-1970s market, so originality depends on the Bronco's specific equipment and how it was delivered. What matters most is matching the correct size family, wheel diameter, and sidewall presentation to the truck you actually have.

For a careful restoration, use factory paperwork, original photos, window-sticker material, or a Ford truck marque specialist to confirm the exact setup. A whitewall passenger-car presentation can look very different from a truck blackwall or traction-style tire even when the size is technically correct. If your goal is judged authenticity, treat model year, market, and trim as part of the research rather than relying on size alone.

Correct tire fitment matters a great deal when a 1979 Ford is being prepared for serious judging or marque-specific display. Size, construction type, wheel diameter, and sidewall style all affect whether the car or truck looks era-appropriate. A metric TRX Mustang II, a whitewall LTD, a blackwall heavy-duty F-350, and an RWL or stripe-equipped sporty application each carry different visual expectations.

Judges and knowledgeable enthusiasts often notice tire choices quickly because they change stance, proportions, and period feel. A radial in place of a bias-ply, the wrong wheel diameter, or a sidewall treatment that does not suit the model's character can stand out even to non-specialists. If authenticity is the priority, compare your target tire to period photos and consult club standards for the exact type of event you plan to enter.

For the 1979 Ford F-250 in 750-16, Firestone and BFGoodrich both offer bias-ply choices, but their available sidewall presentations and published ratings are not identical. Firestone appears in blackwall and wide whitewall form with a 1,660-pound load rating at 40 psi, while BFGoodrich appears in wide whitewall form with a 1,850-pound load rating at 48 psi. Both fit 16-inch wheels and share a 5.00 to 6.00-inch rim-width range where published.

That makes the decision less about one being universally better and more about matching the truck's purpose and appearance. A more work-oriented truck may lean toward blackwall presentation, while a restoration with more visual emphasis may favor a whitewall. Before choosing, confirm whether the truck is running the 750-16 setup rather than one of the 16.5-inch alternatives, because the wheel diameter changes the conversation completely.

1979 Ford tires can be suitable for highway use when the size, condition, and speed rating match the vehicle and its use. The clearly rated products here include 145R12 at S, which corresponds to 112 mph, and 190/65R390 at H, which corresponds to 130 mph. Many bias-ply truck and passenger sizes do not carry an explicit speed letter in the visible size marking here, so their safe use depends heavily on proper inflation, load control, tire age, and overall vehicle condition.

On a well-maintained 1979 Ford, the vehicle's brakes, suspension, steering, and age-related mechanical limits are often as important as the tire itself at normal highway speeds. A full-size truck on older running gear should not be treated like a modern SUV simply because the tire is new. Before longer highway travel, make sure the tire age, pressure, and load are appropriate for the trip and that the vehicle is equally ready.

Inflation pressure on a 1979 Ford depends on the exact tire size and product, not just the vehicle model. Published examples include H78-15 at 1,770 pounds at 32 psi or 1,830 pounds at 45 psi depending on the tire, L78-15 at 1,970 pounds at 32 psi, 700-15 at 1,700 pounds at 32 psi, E70-14 at 1,400 pounds at 32 psi, 800-16.5 at 2,045 pounds at 60 psi, 950-16.5 at 2,780 pounds at 60 psi, 750-16 from 1,660 pounds at 40 psi to 1,850 pounds at 48 psi, and LR78-15 at 1,970 pounds at 32 psi.

Use the vehicle's original manual or tire placard as the starting point for factory-era guidance, then compare that to the reproduction or modern tire's own rated pressure and load information. Do not carry a pressure figure from one size to another just because both fit the same model line. Trucks, vans, specialty wheel packages, and passenger cars within the 1979 Ford family can differ enough that inflation should always be size-specific.

Before a longer drive in a 1979 Ford, inspect the tires for sidewall cracking, cuts, bulges, uneven wear, and signs of impact damage, then verify air pressure cold. Make sure the valve stems are sound, the spare is usable, and any tire that may use a tube is not showing stem movement or chronic pressure loss. If the vehicle has been sitting, look carefully for flat-spotting or age-related stiffness before setting out.

Tires are only one part of the picture on a vehicle of this age, so pair the tire check with a basic mechanical review of brakes, steering, suspension, wheel bearings, and fluid levels. A 1979 Ford that is perfectly pleasant on short local runs can reveal weaknesses once heat and distance build on the road. A few minutes of pre-trip inspection can make the difference between a relaxed drive and a preventable roadside stop.