For what it’s worth. I found the tire selection better and more cost effective on 18s vs 17s. Plus 18s clear enough to let you run 275s and 285s up front. That’s an 11.5and 12.0 wide tire for comparison
18 seems to be todays standard. 16-20 are available on new cars, so most mfgs will at least have ‘normal car ratios’ Selection becomes limited more with each size as you go bigger or smaller. 14’s are getting really tough to find…