Audi S8
Find Tyres for 2012-2018 Audi S8 (D4)
UK-market tyre sizes for the 2012-2018 Audi S8, with chassis-code matching and trim notes.
About this generation
The 2012-2018 Audi S8 occupies a specific slot in the Audi lineup, and tyre choice for this generation has to match the wheel and trim ordered from new. The figures on this page reflect UK-market original-equipment fitments.
Chassis code D4 identify this generation in parts catalogues, fitment databases and OEM tyre listings — useful when ordering online.
Chassis code: D4. Use the chassis code to confirm you have the right generation when ordering tyres.
Common factory tyre sizes
UK-market factory fitments for the 2012-2018 Audi S8 typically include:
Wet grip is the most relevant EU label rating for UK driving. On the S8, prioritise wet grip A or B for shorter braking in rain.
Audi works with tyre makers to develop OEM-marked versions for the S8, tuned for the car's suspension calibration. Star, MO, AO or J markings indicate manufacturer-approved tyres.
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Frequently asked questions
Quick answers about UK tyre fitment, MOT rules and seasonal options.
What do star/OEM markings mean on Audi S8 tyres?
Audi approves specific tyres for many of its models, marked with a star (BMW), MO (Mercedes), AO (Audi), J (Jaguar) or similar. OEM-marked tyres are tuned for that car's suspension and don't always come from the major brand-name fitter as a stock item — they may need to be ordered.
What wet grip should I look for on the Audi S8?
For UK driving conditions, prioritise an EU tyre label wet-grip rating of A or B. Wet grip directly affects braking distance — the gap between A and E ratings can be more than a car length at 50 mph.
Are all-season tyres suitable for the Audi S8?
All-season tyres carrying the 3PMSF snowflake symbol are a sensible choice for UK Audi S8 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 2012-2018 Audi S8 use?
Common UK factory fitments for the 2012-2018 Audi S8 include 265/40 R20, 265/35 R21. The exact size depends on the wheel and trim ordered — always confirm on your tyre sidewall before fitting.
What does the chassis code D4 mean for tyre choice?
The D4 chassis code identifies this specific generation of the Audi S8. 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.