Tyres.co.uk has options for Michelin Pilot Sport 4 S and Pirelli P Zero (PZ4) in 275/30 R20 97Y XL for RS5 Coupé and Sportback 2017 – 2024 models with original 20-inch wheels. Check the registration, load index, speed rating, and specs before purchasing.
For the Audi RS5, the tyre pressure information placard in the driver’s side B-pillar, accessible with the driver door open, has tyre size information. This placard has information for the combination of wheels and tyres as well as cold pressure. Since there are different generations of the RS5, be sure to look at the tyre sidewall and the owner’s manual.
The Audi RS5 has quattro four-wheel drive, so all four tyres must be the same size, construction and tread pattern. If the other pair cannot be appropriately matched, all four must be replaced. If only one axle is being replaced, fit a matching pair to the rear axle in line with the UK’s tyre safety recommendations.