Wheel and tire sizes....what is too much?

[spannermanager]

Originally Posted by Oval

You can ignore all this for Hill climbs, too.. the car must 'work' from the start line with everything cold...

I've just gone from 15 to 14-inch wheels and saved more than a kilo per corner.. Yay!

Good move Oval, going the right way, why not 13"? Even lighter with Kevlar tyres, Some wheel types foul the lower front ball joint I know, especially with drop spindles, a few German guys are onto them o.k, , and for circuit racing, gearing needs looking at to run 21/22" tyres.