1968 ISO Grifo Tires

A 1968 ISO Grifo uses either 205R15 or 215R15, depending on the sub-model. The Grifo Coupe uses 205R15, while the Grifo 7 Litre Coupe uses 215R15. Both are radial tire fitments for 15-inch wheels, so the difference is not construction type but the exact size tied to the specific version of the car.

That means the first step is confirming which Grifo you have before comparing tires. A 15-inch wheel alone does not settle the question, because both sizes share that rim diameter. If the car has aftermarket wheels, suspension changes, or prior owner modifications, it is worth checking the wheel width and available clearance before selecting a replacement tire.

The 1968 ISO Grifo uses a 15-inch rim diameter with both of its primary tire sizes. The 205R15 and 215R15 fitments are both built around a 15-inch wheel, which keeps wheel diameter straightforward even though tire size changes between the two covered sub-models.

Rim diameter is only part of the fitment picture, so it should not be the only measurement checked. Wheel width, overall tire clearance, and the car’s actual setup still matter, especially on a hand-built collector car that may have seen changes over time. Confirming the exact sub-model and measuring the existing wheel helps avoid choosing the right diameter but the wrong overall tire fitment.

The 1968 ISO Grifo has more than one tire size because the two covered sub-models do not use the same fitment. The Grifo Coupe uses 205R15, while the Grifo 7 Litre Coupe uses 215R15. Both are radial tires on 15-inch rims, but the tire size changes with the specific version of the car.

For an owner, that makes sub-model confirmation more important than broad year-make-model searching. The car may still wear 15-inch wheels, yet the correct tire choice depends on whether it is the standard coupe or the 7 Litre Coupe. Matching the tire to the sub-model helps preserve the intended stance and avoids making a size decision based only on what happens to be mounted now.

Start with the basics: the 205R15 tire should match the 1968 ISO Grifo Coupe, not the 7 Litre Coupe. Within that size, available choices differ by brand, tire series, sidewall style, and rim-width specification. For this application, Phoenix and Avon offer different presentations, including Wide Whitewall and Blackwall options.

After confirming size, think about how the car will be used and how you want it to look. A blackwall generally gives a more restrained sporting appearance, while a wide whitewall creates a more distinctive period-style presentation. It also helps to compare the wheel on the car against the tire’s rim-width specification before settling on a particular product.

For the 1968 ISO Grifo in 205R15, available sidewall styles include Blackwall and Wide Whitewall. Those choices create a meaningful visual difference even when the tire size stays the same. A blackwall keeps the car’s appearance understated, while a wide whitewall gives it a more formal and traditionally styled look.

Sidewall style should follow the personality of the specific car and the owner’s restoration goals, not just the tire size. A highly original-looking grand touring coupe may call for a different presentation than a road-driven car with subtle updates. Appearance also needs to stay secondary to fitment, so size, wheel compatibility, and condition of the actual wheel remain the first checks.

For the 1968 ISO Grifo’s 205R15 application, available brands include Phoenix and Avon. Both are radial tire choices for the 15-inch fitment, but they differ in presentation and series. Phoenix appears here in a European Passenger tire with a 2.50-inch whitewall, while Avon is offered as a blackwall Textile-series tire.

Brand choice should come after the correct size and sub-model are confirmed. Once that is settled, compare the tire’s visual style, rim-width suitability, and how closely the overall look matches the character you want for the car. On a collector GT like the Grifo, the difference between brands often matters as much in appearance and presentation as in the basic fitment itself.

A period-style choice for a 1968 ISO Grifo starts with the correct sub-model size: 205R15 for the Grifo Coupe or 215R15 for the Grifo 7 Litre Coupe. Staying with the proper radial size preserves the car’s intended visual relationship to its 15-inch wheel. From there, the decision becomes one of sidewall treatment and overall presentation.

For the 205R15 application, a blackwall and a wide whitewall create very different impressions. The best match depends on whether the goal is a restrained sporting look or a more formal vintage appearance. When exact originality matters, it is wise to compare the car against marque references, period photos, or restoration documentation before committing to a specific sidewall style.

Correct tire fitment matters greatly on a 1968 ISO Grifo restoration because the tire strongly influences stance, wheel-to-body proportion, and the overall visual character of the car. Using the proper sub-model size, whether 205R15 or 215R15, keeps the restoration anchored to the car’s intended fitment rather than whatever may have been installed later.

Appearance is only one reason to get it right. The wrong size can also complicate clearance, steering feel, and wheel compatibility, especially if the car has non-original wheels or suspension changes. Even on a visually focused restoration, checking the actual rim dimensions and the car’s current setup helps ensure the finished result looks right and functions properly on the road.

Yes, modifications can affect tire fitment on a 1968 ISO Grifo even when the tire size sounds correct on paper. Aftermarket wheels, changes in wheel width, altered offset, suspension work, or body modifications can all change how a 205R15 or 215R15 tire sits in the car. That is especially important on a low grand touring coupe with tight visual proportions.

A car that has been lowered or fitted with different wheels may need closer checking at the fenders, steering stops, and inner clearances before replacement tires are chosen. The safest approach is to confirm the actual wheel dimensions on the car and inspect available room around the tire, rather than assuming every Grifo still matches its original setup.

Before driving a 1968 ISO Grifo on new tires, inspect the wheels for damage, confirm the tire size matches the exact sub-model, and make sure each tire is mounted on the correct 15-inch rim. It also helps to check for even seating, visible clearance around the suspension and body, and proper inflation before the car goes back into regular use.

A collector car deserves a broader once-over before road use, especially after sitting. Look at the condition of brake components, suspension bushings, steering play, and any signs that the old tires may have masked alignment issues. A short local test drive is a smart next step, giving the owner a chance to feel for rubbing, pull, vibration, or air loss.

Tires on a collector 1968 ISO Grifo should be maintained with regular pressure checks, visual inspections, and attention to age-related deterioration. Even if tread wear looks minimal, a lightly used car can still develop sidewall cracking, flat spotting, or gradual air loss. That applies whether the car runs 205R15 or 215R15 radials.

Storage habits matter nearly as much as mileage on a vehicle like this. Keeping the Grifo away from prolonged heat, direct sunlight, excess moisture, and ozone-producing equipment helps preserve the tires between drives. It is also wise to inspect them before longer outings rather than relying on miles alone, since collector vehicles often spend more time parked than driven.