Porsche 911
Find Tyres for 2017-2019 Porsche 911 (991)
Find the right tyre size for the 2017-2019 Porsche 911 — match against your sidewall before booking a fit.
About this generation
The current-generation Porsche 911 (2017-2019) is sold in the UK with a small set of factory tyre sizes per trim. Replacement tyres should match the size, load index and speed rating of what came on your specific car.
Trims of the 2017-2019 Porsche 911 use noticeably different tyre widths. The size on your sidewall is the only definitive answer for your specific car.
Chassis code: 991. Use the chassis code to confirm you have the right generation when ordering tyres.
Common factory tyre sizes
UK-market factory fitments for the 2017-2019 Porsche 911 typically include:
Original-equipment sizes shown here are typical UK fitments. Sport packs, optional alloy upgrades and dealer accessories can change the size — always confirm before fitting.
Tyre fitment for any Porsche 911 depends on the wheels and trim ordered from new. The most accurate way to confirm a replacement is to read the size from your existing tyre sidewall.
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Tyre sizes vary by trim, year, wheel size and manufacturer specification. Confirm the size on your tyre sidewall before fitting.
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Other Porsche 911 generations
- Generation911 996 (1997-2005)Chassis: 996
- Generation911 997 (2004-2012)Chassis: 997
- Generation911 991 (2011-2019)Chassis: 991
- Generation911 992 (2019-present)Chassis: 992
- Generation911 GT3 996 (1999-2005)Chassis: 996
- Generation911 GT3 997 (2006-2012)Chassis: 997
- Generation911 GT3 991 (2013-2019)Chassis: 991
- Generation911 GT3 992 (2021-present)Chassis: 992
- Generation911 GT2 997 (2007-2012)Chassis: 997
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Frequently asked questions
Quick answers about UK tyre fitment, MOT rules and seasonal options.
Are all-season tyres suitable for the Porsche 911?
All-season tyres carrying the 3PMSF snowflake symbol are a sensible choice for UK Porsche 911 drivers who don't want to swap between summer and winter sets. Confirm the size and load rating match your OEM spec.
What tyre size does the 2017-2019 Porsche 911 use?
Common UK factory fitments for the 2017-2019 Porsche 911 include 265/35 R20, 325/30 R21. The exact size depends on the wheel and trim ordered — always confirm on your tyre sidewall before fitting.
What speed rating is required for the 2017-2019 Porsche 911?
Performance variants of the Porsche 911 typically require a Y-rated (300 km/h) or W-rated (270 km/h) tyre. Match or exceed the original speed rating shown on your sidewall — fitting a lower-rated tyre can affect handling and may be illegal on certain models.
What's different about the 2017-2019 911 compared with other generations?
This is the 2017-2019 generation of the Porsche 911. Earlier and later generations use different platforms, wheel sizes and tyre fitments, so always match your specific year to the correct generation page.
What does the chassis code 991 mean for tyre choice?
The 991 chassis code identifies this specific generation of the Porsche 911. Tyre fitment guides and parts catalogues use the chassis code to match correct sizes, load indices and speed ratings — useful when ordering online.
Tyre Finder UK provides general tyre guidance only. We do not guarantee tyre fitment, local stock, prices or fitting availability. Always confirm your tyre size, load rating, speed rating and vehicle requirements using your current tyre sidewall, vehicle handbook, manufacturer guidance or a qualified tyre fitter before fitting.