OK, I take back what I said in my last post. The NSR tires are ever sol slightly too big and move around on the ThurderSlot front wheels. I also tried some Slot It front tires but had the same issue. I then moved to the stock tires and tried to true them to the point where they didn’t have any tread and in doing so melted the rubber because the tires are too soft. I am trying to clean them up and see if I can get them to work. Does anyone have any suggestions?