I built a homebuilt 2 WD chassis around the size specs of an HPI Super RS4 and have HPI rims all around. On the rears I have Traxxis Bandit On Road Slicks (part no. 3470) which are made for a 2.15" rim and the fit fine but are a little wide for the front. I cannot find any NOS tires for either the Super RS4 -slicks or Kyosho Superten which are about the same size 2.2" rim save for some treaded ones and I'm wanting slicks. I know they quit making the Super RS4 quite a while ago, but I thought there might be some other manufacturers who made the same size tires and I am finding out it's not the case. Are there any suggestions for alternatives? I might be going to straight up 1/10 rims and tires in front, but the matching RS4 rims and tires are also out of production.