The R8, like most mid- or rear-engine designed sports cars, utilises wider roadwheels and tyres on its rear axle. For the 18 inch alloy wheels (on standard summer tyres), there is just one range of sizes - the fronts are sized at 8.5Jx18H2 ET42, whilst the rears are two inches wider at 10.5Jx18H2 ET50. With the 19 inch wheels (standard fit in most markets), the theme continues - the fronts are all 8.5Jx19H2 ET42, and the rears are 11.0Jx19H2 ET50.Audi R8 Audi R8 Black | audi wallpaper Fast Sports Cars: Audi R8 The Audi R8 « Zandjets2020 ...