1968 Ford Tires

The 1968 Ford uses three primary tire sizes: 775-15, 815-15, and 8.25-15. All three are bias-ply sizes for 15-inch rims, but they do not apply across every covered configuration in the same way. Sedan and convertible applications with 6-cylinder or 302 V8 engines use 775-15 and 815-15, while versions with 390 and 428 V8 engines use 8.25-15 and 815-15.

The practical step is confirming the exact sub-model and the wheel size currently on the car before choosing a tire. A full-size Ford from this era may also have had wheel changes over the years, so matching the tire to the actual 15-inch rim and the size already fitted is more useful than assuming every 1968 Ford uses the same setup.

The covered tire fitments for the 1968 Ford use a 15-inch rim diameter. That applies to 775-15, 815-15, and 8.25-15, so the common thread across these primary sizes is the 15-inch wheel. The size code itself also reflects that rim diameter, with the final number identifying the wheel size the tire is built to mount on.

Rim diameter is only part of the fitment picture, especially on a vintage car that may no longer have its original wheels. Rim width also matters, and the product choices in these sizes do not all share the same width specifications. Checking the actual wheel before purchase helps avoid problems with fit, appearance, and how the tire sits on the rim.

More than one tire size appears because the 1968 Ford fitment changes by covered engine and sub-model grouping. The 6-cylinder sedan and convertible application uses 775-15 and 815-15, the 302 V8 sedan and convertible also uses 775-15 and 815-15, and the 390- and 428-powered version uses 8.25-15 and 815-15. That creates overlap, but not one single universal size.

This matters because tire selection should begin with the exact configuration rather than the year alone. Two cars that look similar may call for different sizes, and a larger engine application can move into a different width range. Once the correct size is confirmed, then it makes sense to compare sidewall styling, brand options, and restoration-oriented appearance.

For the 1968 Ford, 775-15 is a bias-ply tire size in its primary fitment form. It uses a vintage numeric sizing system and mounts on a 15-inch rim. Available products in this primary size stay within the traditional bias-ply construction, which is why much of the choice in 775-15 comes from brand, tire series, and sidewall treatment rather than from switching among primary constructions.

That distinction matters because a bias-ply tire preserves the period-style look and construction associated with this application, while radial alternatives belong in a separate equivalent-size conversation. Anyone considering a change should compare the wheel's actual width and the car's clearance first, since moving away from the primary construction is not simply a matter of matching the last number in the size.

Radial equivalents for 775-15 include 195R15, P205/75R15, P215/70R15, and 670R15. Those choices cover several radial formats: 195R15 is an 80-series metric radial, P205/75R15 is a 75-series P-metric radial, P215/70R15 is a 70-series P-metric radial, and 670R15 is a bias-look radial intended to retain a more traditional visual character.

These alternatives give a buyer several ways to approach the same 775-15 fitment question, but they should be treated as comparisons rather than automatic substitutions. The recommended rim width range tied to these equivalents is 5 to 7 inches, and it is still smart to check wheel width, overall clearance, and how the tire choice suits the car's intended appearance and use.

Start by confirming the car's exact primary size and the actual wheel dimensions on the vehicle. On the 1968 Ford, the only stated radial equivalents are tied to 775-15, so conversion decisions are most straightforward when that is the existing fitment. The wheel must match the radial's rim requirements, and the vehicle should have enough clearance for the chosen equivalent size.

A careful conversion also includes checking suspension condition, steering clearance, and the presence of any aftermarket wheels or ride-height changes. Radial equivalents such as 195R15, P205/75R15, P215/70R15, or 670R15 may be considered, but none should be treated as automatic replacements. The smarter approach is comparing the intended look, wheel compatibility, and space around the tire before changing construction.

Choosing a 775-15 tire starts with making sure that size actually belongs on the specific 1968 Ford being fitted. Once that is confirmed, the major differences are the tire series, sidewall appearance, and wheel-width specifications offered by BFGoodrich, Firestone, and Goodyear. In this size, available looks range from blackwall and narrow whitewall to redline, goldline, blue-dot, and Blue Streak styling.

The best way to narrow the field is to decide whether the car is being kept close to a traditional full-size Ford presentation or aimed at a more distinctive period-style look. Wheel width matters too, because some 775-15 products call for narrower rims than others. Matching the tire's visual character to the car's stance and use usually leads to a better result than choosing by brand name alone.

The available sidewall styles for 1968 Ford tires vary by size, but the covered options include blackwall, narrow whitewall, redline, goldline, whitewall-redline, blue-dot, and raised-white-letter-blue-streak. Most of that variety appears in 775-15, while 815-15 choices are more limited and focus on narrow whitewall and whitewall-redline presentations. All of these remain within the period-style bias-ply category for this application.

Sidewall choice can change the personality of the car more than many buyers expect. A blackwall keeps things restrained, narrow whitewalls lean toward a traditional full-size look, and redline or goldline adds a sportier late-1960s flavor. The right selection depends on the car's trim, finish, and restoration direction, not just the tire size stamped on the sidewall.

BFGoodrich, Firestone, and Goodyear all offer tires for the 1968 Ford within the covered primary sizes. The greatest brand spread appears in 775-15, where multiple series and sidewall treatments are available, while 815-15 is represented by BFGoodrich offerings in the Silvertown Classic Bias Ply line. Each brand brings a different mix of visual style rather than a completely different fitment approach.

Brand selection should still come after confirming the right size for the car, because a strong brand lineup in one size does not mean the same variety exists in another. Once size is settled, compare series names, sidewall style, rim-width specifications, and load figures at the stated pressure. That gives a more useful basis for choice than treating one brand as universally right.

A period-style 1968 Ford tire choice begins with the correct primary size for the exact sub-model, since this application uses 775-15, 815-15, or 8.25-15 depending on configuration. From there, a bias-ply tire is the traditional construction associated with these fitments. That makes the next decision one of visual character, especially if the car is being restored with late-1960s full-size appearance in mind.

For many buyers, the right period-style result comes from balancing size accuracy with sidewall presentation. Blackwall, narrow whitewall, redline, and goldline choices can all shift the car's look noticeably. If exact historical originality matters beyond a general period-style presentation, marque references and vehicle-specific documentation are the right next step before settling on a particular sidewall treatment.

Tire construction has a visible effect on a restored 1968 Ford because the primary fitments are bias-ply sizes with a distinctly vintage presentation. The shape and stance of a bias-ply tire tend to support the traditional look buyers expect on a late-1960s full-size Ford. That is especially relevant when the restoration goal is to preserve the car's era-appropriate visual balance.

A radial alternative can be worth considering for some owners, but it changes the decision from pure restoration appearance to a broader fitment and use question. In this application, radial equivalents are stated for 775-15 only, including a bias-look radial option that aims to retain a more traditional appearance. The final choice depends on how closely the car is being styled to its original-era character.

Yes, modifications can affect tire fitment on a 1968 Ford even when the size being considered is one of the correct primary sizes. Aftermarket wheels, changes in rim width, suspension alterations, and ride-height changes can all influence how a 775-15, 815-15, or 8.25-15 tire sits and clears. That matters on a full-size car where visual stance and fender space are part of the overall presentation.

A tire that is correct for the model range still needs to suit the actual car in front of you. Wheel diameter must remain 15 inches for these fitments, but width and offset changes can alter the outcome. Looking at steering clearance, fender room, and the current wheel setup before ordering is a better safeguard than relying on year and model alone.

Before driving a 1968 Ford on new tires, inspect the wheels for correct diameter and sound condition, confirm the tires are mounted in the proper size, and check inflation against the tire's requirements. It also helps to look over suspension and steering components, since worn parts can affect how a fresh set of bias-ply tires behaves on the road.

A road-ready inspection should also include tread seating, visible sidewall condition, valve stems, and clearance during full steering travel. On a collector-era car, it is smart to take a short test drive first and recheck pressure afterward. That small routine can reveal rubbing, settling, or installation issues before the car goes on a longer drive.

775-15 tires on a collector 1968 Ford should be maintained with regular pressure checks, visual inspections, and careful storage habits. Even when tread wear is minimal, a low-use bias-ply tire can still age through time, heat, sunlight, and long stationary periods. Looking for cracking, bulges, cuts, and slow air loss is just as important as watching the tread itself.

Collector cars benefit from routine inspection because they often spend more time parked than driven. Keeping the car in a clean, dry storage environment and moving it occasionally can help reduce flat-spotting concerns. Before each driving season, check the tire condition along with wheel hardware and general chassis health so the car is ready for use rather than simply ready to look at.