Just as 2 cents. I quit running 1/12 because of the tire cost only. I quit running WGT because of the same thing, ditto for foam oval. I started with the F1 and VTA on rubber and wished it would go to a pan car GT style and it did. One run and I was hooked. It was just way more fun that running on the slot car foam. The cars begin to act like real race cars. But for this sake, the foam cars build traction faster on the track so keep them around.