ok... I was just thinking to myself. I was trying to search for facts on this and piece them together. But I am going to assume that the metal on rims would weigh more than rubber. So that would mean a smaller wheel with the SAME circumference as a larger wheel would be lighter... (that is assuming that the wheel design is the same)...

Also, you could change the handling easier with a smaller wheel by changing tire sidewall stiffness..



SO WHY!! does everybody wnat such big rims on their cars? I am not talking about the tahoes with 22" but say the bmw that come with 19".... Why would they do that?