Finding Alloy wheel cross sections seems surprisingly hard. Must be a "dont sue us" thing! I've located a couple car companies that describe the components of the wheel. Seems it's up to me to dim each tire?

Does anybody know any resources for Rim cross sections?

Heres a good one. Don't forget that the rim cross section is the same for all the wheel designs. It is the spokes etc that are change.

http://www.wheelspecialists.com/wheel-specs

Thanks Steve!