As far as I know and I drive such carFor 2001 RS4 the real Tyre size is 255/35 R18 and not 235/35 R 18...And for the later models is 255/35 R19 and not 255/30 R19.Gabor
Do you have the RS4 B7 which was made from 2006-2008? Cheers Ben
Can rs4 10.5" rims take runflats
...not sure on what’s the best / biggest / widest / maximum tires or rims will fit your car?
Write about the tires you are currently driving on.