Does anyone know if i could put bigger rear tyres on my car? Its got 205 40 17 avons all round which look perfect on the front but it could do with a bigger set on the rear to fill the arches a bit more, I was thinking of putting 215 40 17's on the back but I don't know if you can do this without messing up the 4 wheel drive system. Does anyone know?

 

http://www.club80-90syncro.co.uk/Syn...calculator.htm