1982 Jeep Trucks Tire Fitment Guide

1982 Jeep Trucks use seven sizes across six model lines: 225/75R15, G78-15, L78-15, 10-15, H78-15, 875-16.5, and 950-16.5. CJ5 and CJ7 use 225/75R15, G78-15, and L78-15; Cherokee uses 225/75R15, L78-15, and 10-15; J10 uses 225/75R15, H78-15, L78-15, and 10-15; J20 uses 875-16.5 and 950-16.5; Wagoneer uses 225/75R15 and L78-15. Rim width ranges appear for 225/75R15 at 6.00 to 8.00 inches or 6 to 7.5 inches depending on product, G78-15 at 5.00 to 7.00, L78-15 at 5.50 to 8.00, H78-15 at 5.50 to 7.00, and 950-16.5 at 6.50 to 6.75.

The practical takeaway is that year and make alone are not enough for this lineup. A CJ owner can compare radial and bias-ply 15-inch choices, a full-size Cherokee or Wagoneer owner needs to separate shared sizes from model-specific ones, and a J20 owner must start by confirming a 16.5-inch wheel before doing anything else. Once the model and wheel diameter are confirmed, the next decision is whether the tire should follow a traditional bias-ply look or a more road-friendly radial construction where that option exists.

G78-15 is an alphanumeric bias-ply size used on 1982 Jeep Trucks CJ5 and CJ7 models. In that older system, the letter-and-number combination identifies the tire's general section and profile class, while the 15 is the wheel diameter in inches. It does not read like a modern metric tire, so there is no millimeter section width or stated aspect ratio in the code itself. For the CJ models, it sits firmly in the bias-ply era of sizing and appearance.

That matters because a G78-15 buyer is usually balancing authenticity and use. Available versions include wide whitewall and blackwall choices, which can push the Jeep toward a more restored passenger-style look or a more utility-oriented presentation. If your CJ still wears 15-inch wheels and you want the proportions and character associated with period alphanumeric sizing, G78-15 is the code to match. If you are after a radial driving experience instead, compare it with 225/75R15 rather than assuming the codes mean the same thing.

No, 1982 Jeep Trucks models do not all use the same tire size. Five models share at least one 15-inch size, especially 225/75R15 and L78-15, but the full range includes model-specific applications such as G78-15 on CJ5 and CJ7, H78-15 on J10, 10-15 on Cherokee and J10, and 875-16.5 or 950-16.5 on J20. The J20 stands apart most clearly because it uses 16.5-inch truck sizes rather than the 15-inch sizes found elsewhere in the lineup.

That means the first step is always identifying the exact model, not just the year and make. Jeep's 1982 truck family covered short-wheelbase off-roaders, full-size wagons, and heavy-duty pickups, so one size does not serve every application. If you already know you have a CJ, your choices narrow quickly; if you own a full-size truck or wagon, you need to sort out whether your Jeep falls into the shared 15-inch group or the J20's separate 16.5-inch category before comparing products.

For many 1982 Jeep Trucks models, 225/75R15 and L78-15 are the two main shared choices, but they represent different constructions. 225/75R15 is a radial used on CJ5, CJ7, Cherokee, J10, and Wagoneer, while L78-15 is a bias-ply size used on those same five models. Both fit 15-inch wheels, so the decision is often less about model coverage and more about whether you want radial construction or a more traditional bias-ply format.

Choose 225/75R15 if you want a radial tire that keeps a vintage-compatible look while moving toward more modern road behavior. Choose L78-15 if your priority is the visual character and construction style associated with original-era fitment on many restored Jeeps. That choice can affect how the vehicle presents at shows and how it feels on the road, so it is worth settling your goal first rather than jumping straight to sidewall style. Once that is clear, the correct products become much easier to sort.

1982 Jeep Trucks tires span a wide mix of sidewall styles depending on size. 225/75R15 is available in wide whitewall and narrow whitewall radial form; G78-15 comes in wide whitewall and blackwall; L78-15 appears in blackwall, narrow whitewall, and wide whitewall; H78-15 is offered in wide whitewall and blackwall; and the 16.5-inch truck sizes, 875-16.5 and 950-16.5, are blackwall. That range gives owners very different visual directions even when the wheel diameter stays the same.

For a 1982 Jeep Trucks restoration, the right sidewall style usually follows the model's intended personality as much as the size itself. Whitewalls tend to suit more road-oriented or upscale presentations, especially on Wagoneer or a dressed full-size Jeep, while blackwalls usually look more natural on utility-focused trucks and off-road-leaning builds. A CJ can go either way depending on the restoration theme. Sidewall style should be chosen after the correct size and construction are settled, since not every style appears in every size.

1982 Jeep Trucks fitments are covered by BFGoodrich, Coker Classic, American Classic, and STA. In 225/75R15, the brands are BFGoodrich, Coker Classic, and American Classic; G78-15 is available from Coker Classic and STA; L78-15 comes from Coker Classic and BFGoodrich; H78-15 comes from Coker Classic and STA; and both 875-16.5 and 950-16.5 are covered by STA. That gives the 15-inch shared Jeep applications the broadest brand mix and the 16.5-inch heavy-duty applications the most specialized range.

Brand choice matters because it often overlaps with construction, sidewall style, and the visual tone of the finished vehicle. A buyer comparing 225/75R15 can focus on radial whitewall options across several brands, while a J20 owner in 16.5-inch sizes is comparing truck-oriented blackwall offerings within a much narrower field. It helps to think in layers: start with model and size, then decide on radial versus bias-ply, and only then compare brand and series details that fit the presentation you want for your Jeep.

Rim width requirements for 1982 Jeep Trucks depend on the tire size. 225/75R15 works on rims ranging from 6.00 to 8.00 inches or 6 to 7.5 inches depending on the product; G78-15 uses 5.00 to 7.00-inch rims; L78-15 uses 5.50 to 8.00-inch rims; H78-15 uses 5.50 to 7.00-inch rims; and 950-16.5 uses 6.50 to 6.75-inch rims. Those ranges are not interchangeable across all sizes, even when the wheel diameter is the same.

That makes the wheel itself a key part of the decision. Two tires may both fit a 15-inch rim, yet one may prefer a narrower wheel than another, which can affect sidewall shape and overall presentation. Before committing to a size, measure the actual wheel or confirm its specification through your Jeep's restoration history. That is especially important on older trucks that may have had wheels swapped over the years, since tire size alone does not guarantee the rim width is ideal.

Some original 1982 Jeep Trucks wheels can be used with more than one tire size, but only within the same wheel diameter group. The 15-inch applications overlap broadly among CJ5, CJ7, Cherokee, J10, and Wagoneer, so those models can often compare more than one 15-inch size. The J20 is different because its 875-16.5 and 950-16.5 sizes require 16.5-inch wheels and do not interchange with the 15-inch fitments used by the rest of the lineup.

Wheel diameter is only the first filter. Rim width still needs to match the tire you choose, and the accepted rim-width range changes by size. A 15-inch Jeep wheel that works well with one shared size may not be equally suitable for every other 15-inch option. If your truck has been restored, modified, or simply lived a long working life, verify the wheel stampings or measure the rim before assuming the original wheel can support every candidate tire you are considering.

A stored 1982 Jeep Trucks should be kept away from direct sunlight, electric motors, welders, furnaces, and other ozone-producing equipment that can age the rubber. Clean, dry flooring is preferable, and the Jeep should not sit in standing moisture for long periods. Bias-ply tires generally develop temporary flat-spotting more readily during long static storage, while any collector tire can suffer sidewall aging if it spends years parked in heat and light.

The best routine is to maintain proper inflation, move the Jeep periodically, and take a short drive often enough to flex the tires and redistribute load. If the vehicle will sit for an extended stretch, some owners use stands to reduce weight on the tires, but the suspension and frame should still be supported correctly. A covered indoor space helps far more than occasional cosmetic cleaning. Good storage habits preserve both appearance and serviceability, especially on older 4x4s that see seasonal use.

On a 1982 Jeep Trucks vehicle, tire age matters more than mileage for most collector-use patterns. A tire can look healthy and still be old enough to merit close evaluation, especially if the Jeep sees limited annual use. A common rule of thumb is to begin serious age-based evaluation around five to seven years and to consider replacement as a tire approaches about ten years, regardless of tread depth. The DOT date code on the tire helps establish its age.

That timeline becomes even more important on vintage 4x4s because many spend long periods parked, which can hide age-related deterioration until the next trip. Sidewall cracking, hardening, vibration, and irregular pressure loss matter just as much as worn tread. If your Jeep is a low-mileage toy, show truck, or hunting rig, do not assume light use means long life. Treat the age of the rubber as part of normal maintenance and evaluate the spare on the same schedule as the four road tires.

Tires on a 1982 Jeep Trucks should be inspected before every drive and given a more careful once-over before any extended outing. Look for sidewall cracking, tread separation, bulges, cuts, punctures, uneven wear, and any tire that is not holding pressure consistently. Because several sizes in this range are bias-ply truck or vintage applications, a visual inspection should also include the condition of the wheel itself and the valve stem area.

A quick walkaround catches more problems than many owners expect, especially on older vehicles that spend time parked between uses. If the Jeep has a spare, inspect it with the same seriousness as the running tires since it may be decades old despite never touching the road. Keep a pressure gauge in the truck and compare readings side to side before longer drives. Small issues on a collector 4x4 tend to become roadside issues only after they have been ignored through several short trips.

For a 1982 Jeep Trucks CJ7, bias-ply and radial-era fitments overlap, but original-style authenticity generally points first toward the bias-ply alphanumeric sizes G78-15 and L78-15. The CJ7 sits in a period when many American utility vehicles could appear with either traditional sizing language or newer metric radial replacements depending on market, trim, and later service history. No single original-equipment brand should be assumed without model-specific factory literature or marque research.

If your goal is a faithful restoration, start with the size and construction that match the vehicle's intended presentation rather than chasing a brand name. A bias-ply CJ7 with the right sidewall treatment will usually read as more period-correct than a radial dressed in the wrong visual style. Factory brochures, original window stickers, club archives, and Jeep specialists are the best next step for confirming whether your particular truck was delivered with one alphanumeric size or another in its original market.

Correct tire fitment absolutely matters when showing a 1982 Jeep Trucks vehicle, especially in events that judge authenticity rather than just presentation. Judges and knowledgeable enthusiasts often notice size family, construction type, sidewall style, and overall visual proportion before they notice smaller cosmetic details. A radial tire on a truck restored to strict original standards, or a sidewall treatment that looks out of character for the model, can stand out quickly even if the wheel diameter is correct.

That does not mean every show truck needs the same tire. A CJ built as a preserved utility 4x4 may want a different sidewall look than a Wagoneer restored with more upscale visual cues, and a J20 should never be treated like a 15-inch Jeep application if it still carries its heavy-duty 16.5-inch wheels. If the vehicle will be judged, check the event's standards and use Jeep marque clubs or restoration references to verify what is acceptable for your class before making the final choice.

For the 1982 Jeep Trucks J20 in 950-16.5, STA Traxion and STA Super Transport share the same size, blackwall appearance, 16.5-inch rim diameter, 6.50 to 6.75-inch rim width range, and published load figure of 2,780 pounds at 60 psi. Their basic fitment envelope is therefore the same. The clearest published differences are series identity and a small weight variation, with Traxion at 40 pounds and Super Transport at 41 pounds.

That means the decision is less about whether one will fit and more about which series character better suits the way your J20 is being finished and used. A buyer restoring a heavy-duty truck often cares about tread family and visual tone in addition to size, especially on a work-oriented platform like the J20. Once you have confirmed the Jeep still wears 16.5-inch wheels, compare the two series as alternative expressions of the same heavy-duty fitment rather than as fundamentally different wheel or load solutions.

1982 Jeep Trucks tires can be suitable for highway use when the correct size, condition, and construction are matched to the vehicle and the way it is driven. The available products here do not publish passenger-car speed-rating letters such as S, T, or H, so the safer approach is to treat them as vintage-style Jeep and truck tires rather than high-speed modern performance tires. On many older Jeeps, braking, steering, suspension condition, and the vehicle's short-wheelbase or truck-like dynamics are often the limiting factors before the tire becomes one.

For real-world use, highway safety starts with honest expectations and careful preparation. A properly maintained Wagoneer on sound radial tires may feel very different from a bias-ply CJ or a J20 on heavy truck rubber, even though all are roadworthy in the right condition. Keep speeds sensible, maintain inflation, and make sure the Jeep itself is mechanically ready for sustained road use. Collector vehicles reward conservative driving habits, and that is especially true for utility 4x4s from this era.

Inflation pressure for 1982 Jeep Trucks tires depends on the exact size and product. Published figures include 225/75R15 at either 1,874 pounds at 35 psi or 2,094 pounds at 32 psi depending on the tire, G78-15 at 1,620 pounds at 32 psi, L78-15 at 1,970 pounds at 32 psi, H78-15 at either 1,770 pounds at 32 psi or 1,830 pounds at 45 psi, and 950-16.5 at 2,780 pounds at 60 psi. Those numbers should never be transferred casually from one size to another.

The right starting point is the original Jeep recommendation for your exact model, then the tire maker's pressure guidance for the specific reproduction or replacement tire you choose. A full-size truck carrying weight may need very different pressure from a lightly used CJ even if both wear 15-inch tires. Use the published tire rating as a ceiling tied to its load capacity, not as a universal everyday setting. Matching pressure to the actual Jeep, tire, and use pattern is what matters most.

Before a longer drive in a 1982 Jeep Trucks vehicle, inspect all five tires for cracking, cuts, bulges, punctures, irregular wear, and signs of separation. Verify cold pressures, look closely at valve stems, and make sure the spare is usable rather than simply present. On older Jeeps, that tire check should sit alongside a broader mechanical review that includes brakes, steering play, wheel bearings, fluid levels, lights, and any driveline noises that suggest the truck is not ready for sustained speed.

Longer trips expose weaknesses that short local drives may never reveal. A bias-ply tire that seemed acceptable around town may show vibration after sitting, and an old spare can turn a simple puncture into a trip-ending problem if it has aged out. If the Jeep has been parked for weeks or months, take it on a short shakedown run first and recheck pressure afterward. That extra hour of preparation is usually the difference between a confident road trip and a preventable roadside repair.