hi all,
do the calcs. the 195/45R16 , 175/60R15 and 205/40R17 all have circumference within 1% of each other. 3% is permitted by the TUeV, otherwise it could not be fitted from the factory. That's why 215/35R18 will probably work: 595mm diameter for 205/40R17, 607 for 215/35R18, 2% diff. 225/30R18s 592mm - these should be OK, but you'll have to be really careful about the ETs and the bodywork....
Bret
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2002, Petrol 1.4, 17", sports suspension, OpenSky, leather / alcantara in iceblue
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