1973 Jeep CJ5 Tires

The 1973 Jeep CJ5 uses three primary bias-ply tire sizes: 7.35-15, F78-15, and H78-15. All three are built for 15-inch rims, but they are different size families, so they should not be treated as the same tire simply because the wheel diameter matches.

The key is identifying which size your CJ5 is actually using before choosing a replacement. Many older Jeeps have seen wheel, suspension, or tire changes over the years, so the right approach is to confirm the size on the vehicle, check wheel width, and make sure the tire choice matches the Jeep's present stance and clearance.

The primary tire fitments for a 1973 Jeep CJ5 are all tied to a 15-inch rim diameter. That includes 7.35-15, F78-15, and H78-15, so the wheel diameter is consistent even though the tire sizing systems differ between the numeric and alphanumeric bias-ply formats.

Rim diameter is only part of the fitment picture on an older Jeep. Wheel width still matters, especially if the vehicle has replacement wheels or if you are considering one of the radial-equivalent sizes for F78-15 or H78-15. Confirming both diameter and wheel width will help narrow the correct tire family before any appearance or tread decision.

F78-15 is a vintage alphanumeric bias-ply tire size. The letter identifies the tire's size class, the 78 refers to its profile family, and the 15 indicates that it mounts on a 15-inch wheel.

That matters because F78-15 is not just another way of writing a modern metric tire size. On a 1973 Jeep CJ5, it points to a traditional bias-ply fitment that also has several radial-equivalent alternatives, so owners should decide whether the goal is to keep the original-style sizing language or move to a modern radial format after checking wheel compatibility.

F78-15 is a primary bias-ply tire size for the 1973 Jeep CJ5. In this application, it belongs to the vintage alphanumeric bias-ply sizing system rather than a radial construction format.

That distinction matters because a bias-ply F78-15 keeps the Jeep in a traditional tire family, while any radial alternative should be evaluated as a separate conversion choice. Owners considering that change should compare the actual wheel dimensions, the Jeep's current clearance, and the kind of appearance and road use they want before moving away from bias-ply construction.

Radial equivalents for F78-15 include 195R15 as an 80-series metric radial, P205/75R15 as a 75-series P-metric radial, P215/70R15 as a 70-series P-metric radial, and 670R15 as a bias-look radial. These options preserve the 15-inch rim diameter while giving the buyer several sizing formats to compare.

Each of those alternatives serves a slightly different purpose, from conventional metric radial sizing to a bias-look presentation. The associated rim-width range is 5-7 inches, which makes wheel measurement especially important. Section width, overall proportions, and Jeep clearance should still be checked carefully before treating any equivalent as a suitable alternative.

A bias-look radial can be considered on a 1973 Jeep CJ5 when the Jeep uses a size with that equivalent available. F78-15 has 670R15 as a bias-look radial equivalent, and H78-15 has 760R15 in the same bias-look radial category.

That kind of tire is useful for owners who want a more traditional visual presentation without staying strictly with bias-ply construction. It still needs the same careful checks as any other size change, including wheel width, rim diameter, and vehicle clearance. The result can look closer to a vintage Jeep tire profile, but it should never be assumed to match every setup automatically.

Start with the exact primary size on the Jeep: 7.35-15, F78-15, or H78-15. All are 15-inch bias-ply fitments, but they represent different size families, and F78-15 or H78-15 may open the door to radial-equivalent options that do not apply to 7.35-15.

After size, the real decision is how the Jeep will be used and how it should look. Some owners want a traditional bias-ply appearance, while others want to compare radial alternatives or choose between a wide whitewall and a blackwall truck-style tire in H78-15. Wheel width, stance, and intended road or utility use should guide the final choice.

In the available H78-15 product range for the 1973 Jeep CJ5, sidewall choices include Wide Whitewall and Blackwall. Those two styles create very different visual results even though both remain within the same basic vintage 15-inch bias-ply fitment family.

A wide whitewall leans toward a restoration-oriented or more stylized presentation, while a blackwall truck-style tire keeps the Jeep looking more utilitarian. Sidewall choice should follow the character you want the CJ5 to project, but it still needs to come after the correct size and wheel fitment are confirmed. Appearance is important, yet proper fitment remains the first requirement.

The available H78-15 tires for a 1973 Jeep CJ5 come from Coker Classic and STA. Within that selection, Coker Classic covers wide whitewall bias-ply options, while STA appears in the Traxion series with a blackwall, truck-oriented bias-ply offering.

Brand choice here is less about ranking and more about the kind of Jeep you are building. A CJ5 aimed at traditional show presentation may point toward a whitewall-oriented tire, while a more workmanlike look may favor the Traxion style. Compare brand alongside sidewall treatment, series character, rim-width specs, and the overall look you want on the vehicle.

A period-style 1973 Jeep CJ5 starts with one of its primary 15-inch bias-ply sizes: 7.35-15, F78-15, or H78-15. Staying within those vintage size families preserves the older sizing language and the traditional construction style that suits a classic CJ5 presentation.

The best appearance choice depends on how the Jeep is being finished. H78-15 offers a clear visual split between wide whitewall and blackwall truck-style presentations, while F78-15 can also be a useful period-style starting point with radial-equivalent paths available separately. When exact originality matters, compare the tire choice against Jeep-specific historical references for your particular restoration goal.

Tire construction changes the visual character of a restored 1973 Jeep CJ5 as much as the size itself. A bias-ply tire keeps the Jeep in a traditional vintage format, while a radial equivalent can shift the look depending on the sidewall design and overall presentation.

That is why many restoration-minded owners decide on appearance first, then compare construction within that goal. A standard radial may look more modern in profile and labeling, while a bias-look radial can retain a more old-style impression. The right answer depends on whether the Jeep is being restored for authenticity, casual show use, or regular driving with a vintage-inspired look.

Yes, modifications can change tire fitment on a 1973 Jeep CJ5 even when the tire still uses a 15-inch rim. Aftermarket wheels, altered wheel width, suspension lifts, spring changes, or body modifications can all affect how 7.35-15, F78-15, or H78-15 tires sit and clear the vehicle.

That is especially important on older Jeeps because many have been changed over time for trail use or appearance. A tire that matches the correct size family may still need extra checking at the fenders, steering stops, and suspension travel points. Verifying the actual wheel setup on the Jeep is the safest way to avoid surprises before mounting replacement tires.

Before driving a 1973 Jeep CJ5 on new tires, inspect the wheels for correct diameter and condition, make sure the tires are mounted in the proper size family, and confirm there is no interference at full steering lock. It also helps to check lug hardware, valve stems, and inflation pressure before the first road miles.

Older Jeeps benefit from a broader once-over because tire fitment can be affected by worn steering parts, sagging springs, and prior modifications. A short, careful test drive can reveal rubbing, pull, or unusual vibration early. It is also wise to recheck pressure and visually inspect the sidewalls and tread after the first outing.

Collector-use tires on a 1973 Jeep CJ5 should be kept properly inflated, inspected regularly for cracking, cuts, bulges, or uneven wear, and watched closely for slow air loss. Low-mileage use does not prevent tire aging, so condition matters just as much as tread depth on a vintage Jeep.

Storage habits make a real difference on collector vehicles. Parking away from prolonged sunlight, moisture, and ozone sources helps preserve the rubber, and occasional movement can help avoid long-term flat spotting. A CJ5 that is driven only seasonally still deserves a visual inspection before each outing, especially if it has been sitting for extended periods.