1973 Jeep Tire Fitment Guide

1973 Jeep vehicles use three 15-inch tire sizes across the model range: 7.35-15, F78-15, and H78-15. The 7.35-15 fits the CJ5, CJ6, Commando, DJ5, and DJ6, while F78-15 and H78-15 fit all six models covered here, including the Wagoneer. H78-15 products use a 15-inch rim and call for a 5.50- to 7.00-inch rim width.

The practical takeaway is that a 1973 Jeep buyer needs to identify the exact model before choosing a size, especially if the vehicle is a Wagoneer, since that model does not use 7.35-15. Once model fitment is confirmed, the next step is narrowing the choice by size character and sidewall appearance rather than assuming every 15-inch Jeep tire from 1973 is interchangeable.

A 7.35-15 on a 1973 Jeep is a numeric bias-ply size. In that format, 7.35 refers to the tire’s nominal section width in inches, and 15 refers to the wheel diameter in inches. It is an older sizing convention that predates modern metric markings and is typical of utility and passenger vehicles from the era.

That matters because a 7.35-15 is not just another way of writing F78-15 or H78-15. Numeric and alphanumeric bias-ply sizes can point to different sizing families and visual proportions, so restoration-minded owners should match the exact size used by their model rather than choosing by wheel diameter alone.

No. The CJ5, CJ6, Commando, DJ5, and DJ6 can use 7.35-15, F78-15, or H78-15, while the 1973 Jeep Wagoneer uses F78-15 and H78-15 only. Every size in this group mounts on a 15-inch wheel, but the available size range still changes by model.

That difference is especially important when a Jeep has changed hands many times or has mixed parts from previous owners. A Wagoneer owner should not assume that a size seen on a CJ is automatically right, and a CJ owner pursuing factory-style appearance may want to decide between the three original-type size families before moving on to sidewall style or brand.

1973 Jeep H78-15 tires are available in both Wide Whitewall and Blackwall form. The whitewall choices come from Coker Classic, while the blackwall truck-style option comes from STA in the Traxion series. Those sidewall differences create a very different visual result even when the size stays the same.

For a Wagoneer or a more road-oriented restoration, a whitewall can suit the upscale station-wagon side of Jeep’s 1973 lineup. For a utility-minded Jeep presentation, especially one emphasizing work, fleet, or off-road character, a blackwall often looks more at home. Sidewall style should match the personality of the model and the kind of restoration you are building.

H78-15 tires for 1973 Jeep vehicles come from Coker Classic and STA. Coker Classic offers whitewall bias-ply choices in that size, while STA offers the Traxion blackwall option with a more utilitarian truck-oriented look. Both stay within the period bias-ply construction that suits a 1973 Jeep restoration.

Brand choice is less about chasing a universal best tire and more about matching the tire’s appearance and character to the Jeep you own. A buyer restoring a family-use Wagoneer may lean toward the whitewall presentation, while someone building a more rugged Jeep image may prefer the blackwall Traxion look in the same H78-15 size.

In H78-15 for 1973 Jeep vehicles, Coker Classic and STA differ in sidewall style, load figure, inflation figure, and weight. The Coker Classic versions are Wide Whitewall tires rated at 1770 pounds at 32 psi and weigh 28 pounds, while the STA Traxion is a Blackwall tire rated at 1830 pounds at 45 psi and weighs 35 pounds. All three use a 15-inch rim and a 5.50- to 7.00-inch rim width range.

Those differences matter most when you are balancing appearance against utility character. The Coker Classic choices serve buyers who want a more passenger-car-oriented period look, while the STA Traxion leans toward a sturdier visual style and a higher stated load and pressure figure. Compare the tire’s visual role on your Jeep as closely as you compare the raw specifications.

For 1973 Jeep vehicles using H78-15, the tire fits a 15-inch wheel and calls for a 5.50- to 7.00-inch rim width range. That gives a clear working range for H78-15 applications across the CJ, DJ, Commando, and Wagoneer models that use this size. The wheel diameter is 15 inches throughout the year-make range covered here.

Before mounting any replacement tire, measure the actual wheel that is on the Jeep rather than relying on assumption or memory. Many vintage Jeeps have had wheels swapped over the decades, and even when the wheel diameter is correct, width can affect how the tire sits, looks, and wears. Verifying the wheel first prevents expensive fitment mistakes.

All three tire sizes used on 1973 Jeep vehicles here share a 15-inch wheel diameter, so the original wheel diameter is compatible across the size families. H78-15 specifically fits a 5.50- to 7.00-inch rim width range. That makes wheel diameter less of a question than confirming whether the actual wheel width suits the tire you intend to run.

The key point is that a 15-inch vintage Jeep wheel is not automatically correct for every 15-inch tire just because the bead diameter matches. If your Jeep still has original wheels, or older replacements of uncertain origin, confirm width before mounting. That is especially worthwhile when moving between different vintage size systems such as 7.35-15 and H78-15.

A 1973 Jeep should be stored in a cool, dry, dark space away from direct sunlight, electric motors, welders, battery chargers, and other ozone-producing equipment that can age rubber. Because these are bias-ply tire applications, long static storage can encourage flat-spotting and sidewall aging sooner than many modern radial owners expect. Keeping the tires clean and properly inflated also helps them hold shape during downtime.

If the Jeep will sit for months, roll it periodically or place it on stands in a way that protects both the tires and suspension. Owners who keep a collector Jeep ready for occasional road use often benefit from a simple storage routine: check pressure monthly, avoid damp floors when possible, and inspect the spare with the same care as the four tires on the ground.

Tires on a 1973 Jeep should be judged by age and condition at least as much as by tread depth. A good rule for collector use is to begin evaluating tires closely once they are about five to seven years old and to give serious replacement consideration as they approach ten years, using the DOT date code and the tire’s physical condition as your guide.

That approach matters because many vintage Jeeps are driven lightly, so old tires can still show strong tread while the rubber itself has hardened or cracked. Low annual mileage does not stop time-related aging. If your Jeep has been in storage, or sees only seasonal use, age can be the deciding factor even when the tire still looks serviceable at first glance.

Tires on a 1973 Jeep deserve a quick inspection before every drive and a more thorough inspection before any longer outing. Look for sidewall cracking, cuts, bulges, irregular tread wear, and signs that the tire is losing pressure between uses. Because collector vehicles often sit between drives, the interval between inspections should be based on use events, not just calendar time.

A practical routine is to check pressure and overall condition when the Jeep comes out of storage, again before any highway trip, and once more after the drive if the vehicle felt different on the road. Vintage utility vehicles transmit changes in tire condition through steering feel and tracking, so early inspection can catch a problem before it becomes a roadside issue.

The 1973 Jeep CJ5 belongs to an era when bias-ply construction was still the standard fitment type, and its size range here includes 7.35-15, F78-15, and H78-15. That means an authentic restoration starts with the correct period construction and then narrows to the proper size for the specific Jeep you are restoring. Original-equipment branding should be confirmed separately if your project requires exact assembly-line detail.

For most restorers, the best process is to confirm the Jeep’s original size from factory literature, surviving placards, or marque-club guidance, then choose the sidewall style that matches the intended presentation. A CJ5 built for judged originality may call for a different visual approach than one restored as a trail-ready period driver, even if both remain within correct 15-inch bias-ply territory.

Correct tire fitment matters on a 1973 Jeep because judges and knowledgeable enthusiasts notice size, construction type, and sidewall style quickly. A bias-ply tire in the right vintage size family supports an era-correct appearance, while an obviously mismatched sidewall treatment or the wrong size family can stand out even to casual observers. That is true whether the Jeep is a CJ, Commando, DJ, or Wagoneer.

Show standards vary, so the strictness depends on the event and the level of judging. Local displays may reward overall presentation, while marque-focused events may scrutinize tire details more closely. If authenticity matters, confirm the expected size and sidewall look with Jeep clubs, factory literature, or event rules before choosing between a whitewall passenger-style tire and a more utilitarian blackwall presentation.

For a 1973 Jeep restoration in H78-15, the visual difference is straightforward: Coker Classic offers Wide Whitewall versions, while STA offers a Blackwall Traxion. Both are bias-ply tires, but they communicate different period personalities. Whitewalls suit the more passenger-oriented side of the 1973 Jeep range, while blackwalls align more naturally with utility, fleet, or truck-like visual themes.

That choice can shape the entire tone of the finished vehicle. A Wagoneer with whitewalls can look more in line with its upscale wagon mission, while a work-focused DJ or rugged Jeep build may look more authentic on blackwalls. When originality is the goal, match sidewall style to the model’s intended image and verify event-specific expectations before finalizing the restoration.

1973 Jeep tires in the sizes covered here are bias-ply fitments, and the available H78-15 examples do not carry a modern speed letter in their size markings. That does not automatically make them unsuitable for ordinary road use, but it does mean a buyer should treat them as vintage-style tires and drive within the broader limitations of a 1973 Jeep’s steering, braking, suspension, and overall design.

For practical use, safety comes from matching the tire to the Jeep’s intended role, maintaining proper condition and inflation, and avoiding the assumption that a reproduction bias-ply behaves like a modern radial. A well-maintained vintage Jeep can be driven confidently at sensible speeds, but long highway trips deserve a careful pre-drive inspection and realistic expectations about handling and braking feel.

Inflation pressure on a 1973 Jeep should start with the vehicle manufacturer’s recommendation for the original application, then be cross-checked against the tire manufacturer’s maximum load and pressure figure for the exact tire you choose. For H78-15, Coker Classic carries a 1770-pound rating at 32 psi, while the STA Traxion carries an 1830-pound rating at 45 psi. Those figures are not interchangeable settings for every tire or every Jeep model.

Use the vehicle recommendation as the operating baseline unless the tire maker advises otherwise for the specific product and application. Maximum pressure is not a blanket target pressure. Vintage Jeeps can ride, steer, and wear tires differently with even modest pressure changes, so matching pressure to the exact tire and the Jeep’s intended load is more important than copying a number from a different size or series.

Before a longer drive in a 1973 Jeep, inspect each tire for cracking, cuts, bulges, exposed cords, uneven wear, and stable air pressure. Check the spare as carefully as the four road tires, and make sure valve stems are in sound condition. On a vintage Jeep, tire inspection should be part of a broader walk-around that also includes steering feel, brake response, fluid leaks, and wheel fastener security.

That broader pre-drive routine matters because older utility vehicles often reveal small issues gradually rather than all at once. A tire that looks acceptable in the garage can behave very differently after heat builds on a highway run. Spending a few minutes on inspection before departure can prevent damage to hard-to-replace vintage parts and make the trip more predictable and enjoyable.