What rims are you using? I know with the racer x/type 3 suspension, I have to trim the inside spokes to fit certain wheels. I use a dremel to shave the material away until it clears. It is due to the offset knuckle arrangement. I had to do this with revo wheels.
Imex. My paddle tires are on them. I dont think they where rubbing before. After I drove it last time some of the wheels were not spinnig. I think because they where stuck up against the block