Alloy wheels are machined within .005 ins, steel wheels are stamped and are maybe +or- .030. So the alloy wheels are much more accurate. The down side is hitting a large pot hole the steel wheel will bend and can be straightened out wit a hammer. The alloy wheel in not as ductile and is more apt to crack. I could never tell the difference in ride in a car between steel or alloy wheels, some people say they can. Some claim a 22.5 tire rides better that a 19.5 tire I couldn't. Ride quality is very subjective.