Audi S2 tyre options at Tyres.co.uk include the Michelin Pilot Sport 4 in 205/55 ZR16 94Y XL and the Bridgestone Turanza 6 in 205/55 R16 91W; 205/55 R16 91W is the S2 Coupé standard specification. Check the placard and current wheel fitment before ordering, as non-standard wheels are frequent on Audi S2 models.
Audi S2 tyres have their sizes stamped on the sidewall of each individual tyre. You can find the factory tyre specifications on the tyre information placard, which is located inside the fuel-filler flap. This will help you verify the tyre pressures and relevant specifications. If the flap label is absent, or if the wheels have been replaced, please check the specification against the vehicle documentation and registration.
Audi S2 cars do not always require four new tyres, however, all Audi S2 cars come with permanent quattro all wheel drive and require tyre pairings that are the same size, construction, and tread pattern, as well as a closely matched rolling circumference. If you are replacing only two tyres, the new pair should be fitted on the rear axle. If a matching set cannot be maintained, all four tyres must be replaced.