I've just brought some Velgen wheels and i'm trying to decide what's the best tyre to put on and what size, if any Velgen owners could help it'll be of great help. Thanks.
If you fit 255/40/20 to the front your wheel/tyre will be 25mm bigger in diameter than stock.
If you fit 285/40/20 to the rear it'll be over 30mm greater than stock. Over 40mm for the 295.
Will cut down the arch gap but raise the ride height slightly and mess with your speedo.
Go to willtheyfit.com and stick some numbers in.
yea 40 is a ratio not a size if you go up a wheel size by one inch you usually have to drop to 35 if you went to 22 inch wheels youd prob have to drop to at least 30 to keep diameter the same
The aspect ratio in % (the height of the sidewall divided by the tyre's width) that's what the middle number is