If there is a difference in the radius of 4" wouldn't it make the diameter 8" larger? If there is only a 2" difference in the radius then wouldn't that mean the overall height of the rim is 4" higher? I guess I don't understand.scr38 said:The tires you would put on the 22" rims will have a much lower profile than the original tires, so the diameter won't be any larger; maybe smaller. And even if you put tires on the 22" rims that have the same profile as the original ones it would not raise the vehicle 4"", only 2"". It's the difference in the radius, not the diameter.