Daft question, but....
If I was to get a set of 17" rims, can I get any R17 size tyre? After searching through the forums it seems that the best size is around 215/40?
What I don't understand is... having a 17" rim and then switching between say a 215/40 and 225/50 tyre will change the diameter of the wheel - now is the difference so small that it makes no real difference to the speedo?
Also, Does having a 7" or 7.5" rim make any difference to the tyre selection?
Any help is mucho appreciated