I used to use the Yokomo tires on carpet racing with stock motors. I think they were 318G's. I tell you what, these were by far my favorite tires. The reson I think that they didn't become popular was the fact they they took a while to really devolop traction. Funny thing was that they got better with each battery pack and you could run them until the belts were showing. They lasted forever!
I still have like 5 sets of the tires in case rubber on carpet comes back
