Years ago we attended PUB, with our friend Jim Villers, he had put 15” wheels from a C class MB on his Pagoda for better fuel mileage. We were following him back from PUB, on Interstate, and good thing, he had a blowout on right rear, in the middle of the Interstate. I put my blinkers on and slowed down for traffic to go around me and Jim. After replacing that tire/rim, (not a good mix, three 15” rims and one 14” rim), anyway we got home with him and checked the blown tire, found out it was rubbing the tail pipe and got over heated and bang popped. So I would not advise to put any type of rim/tire that is not to the original specs.