Hi I have got some 18" RS8 alloys at the mo but am tempted to go for the same in 19" they are about £800 on wheelbase with toyo tyres. Will they rub on the arches at all? whats the correct offset/tyre size i need? Also ive always gone for goodyear eagle f1 gsd3 tyres but im being told these are being phased out now? are the asymmetric eagles as good?