2017 Porsche 911 Tires

The 2017 Porsche 911 uses six primary tire sizes: 235/40R19, 245/35R20, 305/30R20, 295/35R19, 265/35R20, and 325/30R21. All are radial sizes, and they are tied to specific sub-models and front or rear positions rather than applying across the entire 911 range.

The practical step is to confirm the exact model and axle position before choosing a tire. A Carrera front fitment can differ from a GT3 RS front fitment, and a rear tire may use either a 19-inch, 20-inch, or 21-inch wheel depending on configuration.

A 2017 Porsche 911 can use 19-inch, 20-inch, or 21-inch rims depending on the sub-model and whether the tire is mounted on the front or rear axle. The primary tire sizes on this page span all three diameters, so the wheel itself has to be confirmed before selecting a tire.

That matters because the same model family can appear with more than one wheel package. Checking the actual wheel diameter on the car prevents mixing a 19-inch fitment with a 20-inch or 21-inch tire that belongs to a different axle or sub-model setup.

The 2017 Porsche 911 covers a broad lineup, including Carrera, Targa, Turbo, 911 R, and GT3 RS applications, and many of them use staggered front-and-rear sizing. That is why the fitment range includes multiple widths and three different rim diameters rather than one universal tire size.

Wheel package differences add another layer, especially where some front or rear positions can use either 19-inch or 20-inch tires within the same sub-model family. Matching the tire to the exact axle and wheel setup is more important here than choosing by model name alone.

Start with the exact tire size for the specific 2017 Porsche 911 sub-model and axle position, then confirm the wheel diameter already on the car. Every fitment here is radial, so the next points of comparison are the available brand, tire series, sidewall style, and any rim-width specification tied to that size.

A front 245/35R20 and a rear 305/30R20 serve very different roles even though both belong to the same car family. It also helps to think about whether the goal is a straightforward blackwall performance look or a more distinctive redline or raised white letter presentation where offered.

Sidewall style depends on the tire size. Blackwall is the most common presentation across the 2017 Porsche 911 fitments, while 305/30R20 and 265/35R20 also open up redline and RWL, or raised white letter, choices in certain Pro-Trac Street Pro III applications.

Those visual differences matter most on cars where appearance is part of the selection process, but they do not replace the need to match the correct size and rim diameter. A sidewall style should be treated as a finishing choice once the proper sub-model and axle fitment are settled.

Available tires for the 2017 Porsche 911 include BFGoodrich, Nitto, and Pro-Trac, depending on size. The mix changes by fitment, with some sizes having a single brand choice and others offering several options across lines such as g-Force, NT555 G2, Street Pro III, and Phenom T/A.

Brand selection should follow fitment confirmation, not the other way around. Once the correct size is pinned down, the useful comparison points become sidewall style, tire series, and wheel compatibility for that exact front or rear application.

Yes. A 2017 Porsche 911 that has aftermarket wheels, altered suspension height, or other chassis changes may need closer fitment review even when the tire size matches a standard application. Changes in wheel diameter, width, or offset can affect how a tire sits in relation to the fender and suspension.

That is especially important on a staggered sports car where front and rear sizes already differ. Checking actual wheel measurements, steering clearance, and full-compression room helps prevent choosing a tire that belongs to the model family but does not suit the modified setup.

Before road use, inspect the wheels for the correct diameter, verify that the tires match the intended front and rear positions, and confirm proper inflation. It is also smart to look over the suspension and alignment condition, since a performance car can be sensitive to wear or setup issues.

A quick follow-up check after the first miles can be just as useful. Looking for any rubbing marks, unusual air loss, or uneven wear helps catch a sizing or setup issue early, especially on cars with staggered tires or recently changed wheels.

Tires on a 2017 Porsche 911 should be inspected regularly, not only by calendar interval but also before spirited driving, longer trips, or after periods of storage. Tread condition, air pressure, cuts, bulges, and sidewall cracking all deserve attention on a car that may see seasonal or occasional use.

Modern low-profile fitments can hide damage less forgivingly than taller tires, so small issues are worth catching early. It also helps to inspect for uneven wear patterns that might point to alignment, suspension, or wheel-position problems rather than a tire issue alone.