With the vehicle's wheels you shouldn't really vary the height by much maybe by one section so from a 60 to a 65. Swap for smaller diameter wheels and you can get taller tyres without affecting your speedometer too much and still keep your insurance company happy.

Check out www.carbibles.com/tyre_bible.html to see what you can get away with

Edited by oldtoffee on 11/06/2013 at 22:41