1967 ISO Tire Fitment Guide

1967 ISO vehicles use three tire sizes: 215R15 for the Grifo, 205R15 for the Grifo and S4 Fidia, and 185R15 for the Rivolta. All three sizes are radial designs and mount on 15-inch rims. Rim width guidance is available for 205R15 at 5.50 to 6.00 inches, and for 185R15 at 4.5 to 6.5 inches depending on the product, with several 185R15 tires centered around a 5.00 to 6.50 inch range.

That means year and make alone are not enough to choose correctly for a 1967 ISO. Start by identifying whether your car is a Grifo, Rivolta, or S4 Fidia, then compare the size already on the car with the wheel you intend to use. If you own a Grifo, pay extra attention because that model appears with two different sizes and should be checked against the actual wheel and present fitment before replacing tires.

On a 1967 ISO, 205R15 is a metric radial size. The 205 refers to a nominal section width of 205 millimeters, the R identifies radial construction, and the 15 is the wheel diameter in inches. When a metric size like this does not spell out an aspect ratio, it is conventionally treated as an 80-series profile in vintage tire applications.

For 1967 ISO fitment, 205R15 is the shared size used by the Grifo and S4 Fidia. That makes it an important reference point if you are comparing coupe and sedan applications within the same marque. Once you know 205R15 is correct for your model and wheel, the next choice is sidewall appearance and product character, since this size appears in both blackwall and wide whitewall forms.

No, 1967 ISO models do not all use the same tire size. The Rivolta uses 185R15, the S4 Fidia uses 205R15, and the Grifo appears with either 205R15 or 215R15. Every size in the range uses a 15-inch rim diameter, but section width changes from model to model and, in the Grifo's case, even within the model itself.

That variation matters because a tire that is correct for one 1967 ISO model may not be the right visual or dimensional choice for another. Buyers comparing cars across the range should think in terms of model identity first and sidewall style second. Grifo owners especially should check the wheels already on the car rather than assuming every Grifo left the same way or has remained unchanged over time.

1967 ISO tires are available in several sidewall styles depending on size. The 205R15 appears in wide whitewall and blackwall form, while the 185R15 is available as a redline, narrow whitewall, or blackwall. That gives Rivolta owners the broadest visual range, while Grifo and S4 Fidia owners choosing 205R15 can decide between a cleaner blackwall look and a more decorative whitewall presentation.

For a 1967 Italian performance or luxury car, blackwalls often align most naturally with a restrained European look, while redlines and whitewalls can shift the car toward a more stylized period presentation. The right choice depends on how the car is being restored, the market flavor you want it to reflect, and whether your goal is a subtle touring appearance or a stronger vintage visual statement.

Four brands cover 1967 ISO applications across the available sizes: Phoenix and Avon in 205R15, plus Coker Classic and Michelin in 185R15. The 205R15 choices are both radial tires, with one wide whitewall option and one blackwall V-rated option. The 185R15 group includes radial redline, narrow whitewall, and blackwall offerings, with Michelin versions carrying H and V speed ratings.

That spread gives buyers different ways to approach the same fitment need. Some owners will prioritize the sidewall look that best suits the car's character, while others will focus on a particular brand tradition or the availability of a higher speed-rated product. Since brand choice is tied to size on 1967 ISO applications, confirm the correct tire size first and then compare the brands available within that exact fitment.

For a 1967 ISO Rivolta in 185R15, Michelin XVS and Coker Classic serve different purposes within the same size. Coker Classic appears as a redline radial with a 5.00 to 6.50 inch rim-width range and a 1,355-pound maximum load at 35 psi. Michelin XVS appears in blackwall and narrow whitewall forms, also on 15-inch rims, with rim-width guidance ranging from 4.5 to 6 inches on one version and 5.00 to 6.50 inches on others, plus H- and V-rated examples.

The practical difference is less about fitment than presentation and product character. A redline changes the visual personality of the Rivolta immediately, while the Michelin options lean toward a more understated European grand touring look. If your priority is matching the car's intended style and road use, compare the sidewall treatment and speed rating first, then confirm the wheel width on the car before making a final choice.

Rim width guidance for 1967 ISO tires varies by size and product. In 205R15, the range is 5.50 to 6.00 inches on the available wide whitewall product. In 185R15, several products fit a 5.00 to 6.50 inch wheel, while one Michelin narrow whitewall version is approved for a 4.5 to 6 inch range. All of these tires mount on 15-inch rims, but width is still an important part of correct setup.

That means wheel diameter alone is only the first checkpoint. Before replacing tires on a 1967 ISO, confirm the actual wheel width on the car and match it to the exact tire you intend to use, not just the general size family. This matters even more on a car with hand-built or period-changed wheels, where a previous owner may have altered the setup from original practice.

Inner tube requirements depend on the exact 1967 ISO tire and, in some cases, on the wheel itself. The 185R15 Michelin XVS products are marked TL, which means tubeless. The 205R15 products do not carry a tube-type or tubeless marker in the available sizing information, so the wheel design and the tire's own sidewall markings should be checked together before final installation.

For collector cars, that distinction is important because an original-style wheel may have different sealing characteristics than a later replacement wheel. If your 1967 ISO retains older rims, inspect the wheel condition carefully and confirm whether the product you choose is intended for tubeless use or should be paired with a tube. Tube, flap, and valve-stem choices should always follow the individual tire and wheel combination rather than general assumptions about the car.

All 1967 ISO tire sizes in this range share a 15-inch rim diameter, so they are aligned at the wheel-diameter level. That does not mean every 15-inch wheel is automatically correct for every size, because section width and approved rim-width ranges still vary between 185R15, 205R15, and 215R15. The Grifo's two-size situation makes that especially important, since the car appears with both 205R15 and 215R15.

Original wheels can often remain part of the setup, but the safe approach is to verify width and present tire fitment before changing sizes. A Rivolta owner moving within 185R15 has a different wheel-width conversation than a Grifo owner considering a wider tire. Treat wheel diameter as the starting point, then confirm wheel width and the car's current clearance and stance before assuming every 15-inch ISO wheel can interchange across the whole model family.

A 1967 ISO should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, standing water, electric motors, battery chargers, and other ozone-producing sources. Maintain proper inflation, keep the car on a clean surface, and move it periodically so the load is not carried on the same tread area for months at a time. Radial tires generally tolerate storage better than bias-ply tires, but they still age from time, environment, and inactivity.

Long static storage is hard on any collector tire, especially on a heavy grand touring car. If the car will sit for an extended period, occasional rolling or properly placed stands can reduce flat-spotting stress and sidewall fatigue. Storage habits are one of the easiest ways to preserve ride quality, appearance, and casing health on a seldom-driven 1967 ISO without changing anything about the car's outward presentation.

On a 1967 ISO, tire life is usually judged more by age and condition than by mileage. A collector-car tire should be inspected carefully once it reaches about five to seven years of age, and around ten years is the point where replacement deserves serious consideration regardless of remaining tread. The DOT date code on the tire helps establish age, and signs such as sidewall cracking, hardening, vibration, or loss of pressure-holding ability matter just as much as tread depth.

That age-based approach is especially important for cars that spend much of their life in storage or on occasional fair-weather drives. A 1967 ISO may cover very few miles each year while its tires continue to age chemically. When evaluating an older set, think beyond appearance alone and consider the tire's date, storage history, and driving plans for the car before deciding to keep it in service.

Tires on a 1967 ISO should be inspected before every drive and more thoroughly before any longer outing. Check for visible cracking, cuts, bulges, uneven wear, foreign objects in the tread, and changes in pressure retention. If the car uses a tube-dependent wheel and tire combination, the valve stem and the wheel's sealing condition also deserve close attention because a problem there can appear before tread wear ever becomes an issue.

Routine inspection is one of the best habits an owner can build with a rare grand touring car. A problem that seems cosmetic in the garage can become much more serious after heat buildup at road speed. Frequent checks also help you spot alignment or suspension issues early, which protects both the tires and the driving character of a 1967 ISO that may only come out for selected events and weekend use.

A 1967 ISO Grifo would have been a radial-era European grand touring car, and the fitments here place it in either 205R15 or 215R15 depending on the car. Radial construction was well established in European performance and luxury applications by the late 1960s, so a radial tire is consistent with the period character of the model. The exact original tire could still vary by market, wheel choice, and how an individual car was equipped when new.

For restoration work, that means size and sidewall appearance deserve more attention than chasing an unverified original brand name. If you are preparing a Grifo for serious judging, compare the car's current wheels, archival photos, and marque-club guidance before choosing between 205R15 and 215R15. That extra research is worthwhile because the Grifo's visual stance is a major part of its identity and can be changed noticeably by tire width.

Correct tire fitment matters on a 1967 ISO because judges and knowledgeable enthusiasts often notice size, construction type, and sidewall style immediately. On a car from this era, an incorrect section width or a sidewall treatment that clashes with the car's intended market presentation can distract from an otherwise accurate restoration. Since the 1967 ISO range includes distinct model-specific sizes, the right fitment is part of presenting the car as coherent and authentic.

The practical standard is to match the tire to the exact model first, then consider whether blackwall, narrow whitewall, wide whitewall, or redline suits the restoration goal. Event rules can differ, especially between concours judging and enthusiast shows, so marque clubs and event-specific standards are the best final reference. Even when a tire is physically usable, a visibly incorrect size or sidewall style can cost points or credibility in a judged setting.

For a 1967 ISO using 205R15, Avon and Phoenix differ in both presentation and specification. The Phoenix 205R15 is a wide whitewall radial with a 5.50 to 6.00 inch rim-width range and a 1,609-pound maximum load at 34 psi. The Avon Turbosteel 205R15 is a blackwall radial in the same wheel diameter and carries a 97V marking, which corresponds to a 149 mph speed ceiling.

That makes the choice less about whether the tire fits the basic 15-inch application and more about the personality you want the car to show. A wide whitewall pushes the look toward vintage elegance, while the blackwall Avon keeps the presentation more restrained and performance-oriented. On a Grifo or S4 Fidia, that visual difference can be as important as the specification details, especially if the car is being restored to a particular style.

1967 ISO tires can be suitable for highway driving when the correct size is chosen, the tires are in sound condition, and the speed rating matches the intended use. The available 185R15 products include H- and V-rated versions with 130 mph and 149 mph ceilings, and the 205R15 range includes a V-rated option with a 149 mph ceiling. Those figures describe the tire's rating, but a car's brakes, suspension, alignment, and overall mechanical state matter just as much on a late-1960s Italian GT or sedan.

In real-world use, most owners will operate well below those upper speed thresholds, so condition and setup are usually more important than headline capability. A properly maintained radial tire in the correct size is only one part of a safe highway car. Before any sustained road use in a 1967 ISO, make sure the tires are fresh, balanced, and correctly inflated, and that the rest of the chassis is equally ready for the speeds you plan to drive.

Inflation pressure on a 1967 ISO should follow the vehicle's original recommendation first, then be checked against the individual tire's own rated load-and-pressure information where that is available. In this range, one 205R15 carries 1,609 pounds at 34 psi, and one 185R15 carries 1,355 pounds at 35 psi. Those figures are tire-specific load references, not a universal inflation prescription for every 1967 ISO application or every tire in those sizes.

The practical approach is to use the factory guidance as your baseline and avoid transferring pressure numbers from one tire size or brand to another. Different constructions and intended uses can respond differently even within the same nominal size. If the car has been modified, carries unusual load, or wears a tire with a different operating character than the original-style fitment, treat pressure setting as part of the overall setup rather than a one-number rule.

Before a longer drive in a 1967 ISO, inspect each tire for cracking, cuts, bulges, tread separation signs, embedded debris, and uneven wear, then verify cold inflation pressures and the condition of the spare. Look closely at valve stems and, where relevant, the sealing condition of older wheels or tube-related components. A longer outing in a car of this age should also include a broader mechanical check of brakes, cooling system, belts, fluids, and steering because tire readiness is only one piece of overall roadworthiness.

That pre-drive routine is especially important on a rare Italian collector car that may spend long periods between outings. Heat, age, and inactivity can expose weak points quickly once the car is back at sustained road speed. A careful inspection before departure reduces the chance that a small tire issue turns into a roadside problem and helps preserve both the car and the driving confidence that makes a well-sorted 1967 ISO so rewarding.