John, it seems that some Challengers were supplied new with Sleel on the rear and rubber on the front. The Challenger pictured here is one that was sold new in Alberta Canada and it originaly had steel on the rear, it was sold at auction last year and the originl steel rear wheels were sold with it. I didn`t bid high enough to get this one, It sold for more than I paid for the two I have now. The other one I have with the cast center fronts has cut off steel rear wheels.