I don't think the wheels are always to blame. I have 3 SS cars and no matter how I move the wheels around between them the time differences are always pretty much the same. What has taken me to the next level in the SS is the setup and prep. There is a lot more to making a fast SS car than the proper amount of steer. Everything effects everything. If you are hitting a wall in speed don't expect to find more speed by doing the same thing over and over. I'm going to give you guys a HUGE hint here. The non dominate wheel has a lot more to do with speed than you think. Ill just leave it at that for now.