The 1972 Porsche 911 sits at an important point in early 911 development, with the long-hood body, air-cooled flat-six character, and the kind of light, communicative feel that makes tire choice especially noticeable. For this model year, fitment centers on two 15-inch radial sizes: 165R15 and 185/70R15, with the exact size depending on sub-model. That means the decision is less about bias-ply versus radial and more about matching the right size, profile, and look to the car you have. Blackwall, narrow whitewall, and wide whitewall options are available, along with touring and sport-oriented radial series for different restoration and road-use goals.
Which Tire Size Is Right for The 1972 Porsche 911
The 1972 Porsche 911 uses two primary tire sizes, and both are radial tires on 15-inch rims. The first step is confirming the exact sub-model, because 165R15 applies to Base & T while 185/70R15 is used on Base & T, E, and S models. Once the correct size is established, the real choice becomes tire series, sidewall style, and whether the car is being kept close to a period-style presentation or prepared for more active road use.
165R15 is a Euro-metric radial size in which 165 refers to nominal section width in millimeters, R designates radial construction, and 15 identifies the wheel diameter in inches. On a 1972 Porsche 911, this size supports the earlier narrow-tire look associated with certain Base & T applications and keeps the fitment in an all-radial format. Available choices include blackwall, narrow whitewall, and wide whitewall tires from brands such as Michelin, Firestone, BFGoodrich, Coker Classic, American Classic, and Vredestein. It is a useful size to evaluate when maintaining the proper sub-model fitment and a more traditional visual proportion.
185/70R15 is a metric radial size where 185 is the nominal section width in millimeters, 70 is the aspect ratio, R indicates radial construction, and 15 is the rim diameter in inches. For the 1972 Porsche 911, this size appears on E and S models and is also used on some Base & T applications, making it the more broadly shared fitment across the range. Product choices include blackwall sport and touring-style radials plus a wide whitewall option from Michelin, Dunlop, Avon, and BFGoodrich. This size deserves close attention when the car's specific trim and wheel setup point to the lower-profile radial fitment.
Sub-model fitment matters on the 1972 Porsche 911 because tire size is not the same across the full lineup. Base & T models can use either 165R15 or 185/70R15, while the E and S are centered on 185/70R15, so identifying the exact version is the first step before comparing tire options.
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1972 Porsche 911 Base & T
The 1972 Porsche 911 Base & T has the broadest fitment picture, since it is associated with both 165R15 and 185/70R15 radial tires on 15-inch wheels. That makes wheel confirmation especially important, followed by choosing the tire style and series that best suit a traditional presentation or more performance-focused road use.
The 1972 Porsche 911 E uses the 185/70R15 radial size rather than the narrower 165R15 fitment. Tire selection here is more straightforward, with the main decision shifting to blackwall versus whitewall appearance and whether the car calls for a classic touring radial or a more sporting series.
The 1972 Porsche 911 S also uses the 185/70R15 radial size on a 15-inch rim. With the size already narrowed down, the focus moves to choosing among the available blackwall and whitewall options and confirming that the wheel width matches the tire being considered.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1972 Porsche 911 Tires for Sale
Available 1972 Porsche 911 tires span both primary sizes and include choices from Michelin, BFGoodrich, Firestone, Dunlop, Avon, Coker Classic, American Classic, and Vredestein. Buyers can compare blackwall, narrow whitewall, and wide whitewall styles across several radial series, with rim-width compatibility varying by tire.
These 1972 Porsche 911 tire FAQs focus on the questions owners usually need answered first: which size fits which sub-model, how the 15-inch radial fitments differ, what product choices exist, and what should be checked before road use.
Tire Size & Fitment
What tire size fits a 1972 Porsche 911?
A 1972 Porsche 911 uses either 165R15 or 185/70R15, and both are radial sizes for 15-inch wheels. The exact size depends on the sub-model. Base & T cars are associated with both sizes, while the 911 E and 911 S use 185/70R15.
The important next step is confirming the exact sub-model and the wheel setup currently on the car. Many early 911s have been changed over the years, so the right choice is not just the year and model name, but the combination of sub-model, wheel width, and the overall appearance or driving character the owner wants to preserve.
What size rim does a 1972 Porsche 911 use?
The 1972 Porsche 911 uses a 15-inch rim with both primary tire sizes. That is true whether the car is fitted with the narrower 165R15 radial or the lower-profile 185/70R15 radial, so the wheel diameter remains the same across the covered fitments.
Diameter is only one part of the fitment picture. Rim width should also be checked against the tire being considered, because product specifications vary within both sizes. On an early 911, confirming the actual wheel on the car is especially worthwhile if the car has changed hands, received replacement wheels, or has been set up differently from its original configuration.
Why does the 1972 Porsche 911 have more than one tire size?
The 1972 Porsche 911 has more than one tire size because fitment varies by sub-model. Base & T cars are associated with both 165R15 and 185/70R15, while the 911 E and 911 S center on 185/70R15. Both sizes remain radial tires on 15-inch rims.
That means the decision starts with identifying the specific version of the car rather than comparing tires as if every 1972 911 used one universal fitment. Once the sub-model is clear, the buyer can focus on profile, sidewall presentation, and wheel-width compatibility instead of trying to force one size across every configuration.
Choosing the Right Tire
What should I consider when choosing a 1972 Porsche 911 tire?
Start with the correct size for the car: 165R15 or 185/70R15, depending on the sub-model and wheel setup. From there, compare construction details within the radial category, along with rim-width compatibility, sidewall style, tire series, and any load or service specifications that matter for how the car will be driven.
A restoration-oriented owner may care most about maintaining the right visual proportion and period-style presentation, while a driver-focused owner may prioritize a particular touring or sport radial series. Early 911s are sensitive to tire choice, so selecting the right size first and then narrowing by appearance and intended use is the soundest approach.
What sidewall styles are available for 1972 Porsche 911 tires?
Sidewall choices for the 1972 Porsche 911 include blackwall, narrow whitewall, and wide whitewall, depending on the tire size and series. The broadest sidewall variety appears in 165R15, while 185/70R15 is available mainly in blackwall with one wide whitewall option.
The best choice depends on how the car is being presented. Blackwall tires usually suit a more understated or performance-oriented look, while narrow or wide whitewalls create a more stylized vintage appearance. Sidewall style should be chosen after the correct size is confirmed, since not every style is offered across both 15-inch Porsche fitments.
What brands offer tires for the 1972 Porsche 911?
Tires for the 1972 Porsche 911 are available from Michelin, BFGoodrich, Firestone, Dunlop, Avon, Coker Classic, American Classic, and Vredestein. Brand choice depends partly on which of the two primary sizes the car uses, because the product mix is broader in 165R15 than it is in 185/70R15.
Brand alone should not decide the purchase. The more useful comparison is brand plus tire series, sidewall style, and wheel-width compatibility for the exact size your 911 needs. That approach helps narrow the field to tires that suit the car's fitment and the owner's priorities, whether the goal is touring use, sportier road manners, or a period-style look.
Restoration & Appearance
Which tire should I choose for a period-style 1972 Porsche 911?
A period-style 1972 Porsche 911 starts with using the correct primary size for the exact sub-model and wheel setup, either 165R15 or 185/70R15. From there, the visual character of the tire matters: 165R15 tends to preserve a narrower traditional look, while 185/70R15 carries a lower-profile radial appearance used across more of the lineup.
Series and sidewall treatment then shape the final presentation. Blackwall tires usually keep the look closer to what many enthusiasts expect on an early 911, while whitewall options create a more customized vintage effect. If exact originality matters, compare the tire choice against marque references and the car's individual restoration goals before deciding.
How does tire construction affect the appearance of a restored 1972 Porsche 911?
On a 1972 Porsche 911, the primary fitments are already radial, so the appearance question is more about size and sidewall than switching between bias-ply and radial construction. A 165R15 gives a taller, narrower Euro-style look, while 185/70R15 presents a wider, lower-profile radial stance on the same 15-inch wheel diameter.
Sidewall treatment can change the car's visual impression just as much as the tire series. Blackwalls keep the presentation restrained and sporting, while narrow or wide whitewalls push the car toward a more stylized vintage look. The cleanest restoration result comes from matching the tire's size and visual character to the sub-model and the era the car is meant to represent.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1972 Porsche 911?
Yes, modifications can affect tire fitment on a 1972 Porsche 911 even when the original size is known. Aftermarket wheels, changed wheel widths, altered offsets, suspension lowering, or bodywork changes can all influence whether a 165R15 or 185/70R15 remains the most appropriate choice for the car.
That is why the current setup matters as much as the original application. A modified 911 should be checked for wheel diameter, wheel width, steering clearance, and fender clearance before a new tire is chosen. Taking those measurements first helps avoid selecting a tire that matches the model year on paper but does not suit the car as it sits today.
What should I inspect before driving a 1972 Porsche 911 on new tires?
Before driving a 1972 Porsche 911 on new tires, inspect the wheels for correct diameter and condition, confirm that the tires are seated properly, and make sure inflation is set to the tire and vehicle requirements being used. A quick check for rubbing at full steering lock and through normal suspension movement is also worthwhile.
On an older 911, the rest of the chassis deserves attention too. Worn suspension parts, uneven alignment, tired shocks, or brake issues can affect how a new set of tires feels on the road. A short, careful test drive followed by a second visual inspection helps catch clearance or settling issues before longer use.
How should 165R15 or 185/70R15 tires on a collector 1972 Porsche 911 be maintained?
Collector-car tires on a 1972 Porsche 911 should be checked regularly for air loss, uneven wear, sidewall cracking, cuts, and any bulges that suggest internal damage. Even a lightly driven car needs routine inspection, because age and storage conditions can affect tire condition long before tread depth becomes the limiting factor.
Proper storage helps preserve the tires between drives. Keep the car away from prolonged sunlight, excess heat, moisture, and ozone sources, and move it periodically so one spot on the tire is not loaded for too long. Before a longer outing, inspect pressures and tread again, especially if the 911 has been parked for an extended period.
