When changing from 16" to 17" wheels do I need to have the geomtry altered and if so how urgent is it.
Thanks anyone who can put me straight

 

I've just gone from 15 to 18's. Kept the same overall diameter so should not really effect rolling circumference (205/55/15 -> 215/35/18). I assume that if you maintain same circumference then you don't have to gange geometry. I look forward to being corrected!

Hope this helps,

Rob