Jud - Do you mount & balance your own car tires or do you have a shop do the work? I'm doing my own motorcycle tires now with this: The Moose Racing stand, once secured to the garage floor, seems to work OK even with a friend's low-profile FJR1300 rear tires (180/55R17). A compressor and lots of Ru-Glyde gets the beads seated pretty quickly and easily in most cases. The front tires, surprisingly, are a bigger challenge on all of the bikes that I've done, maybe because of the narrower drop wells in the front wheels. What do you think - stout enough for a 50-series car tire? On the subject of cost vs. performance trade-offs, that question probably won't get answered to everyones' satisfaction until someone with something like Keith Code's outrigger-equipped Lean/Slide bike does a head-to-head comparison of the two types of tires on the same bike w/ the same rider on the same track under similar weather conditions. It would be an interesting comparison, from the perspective of cornering traction as well as from that of straight-line braking. Maybe one of our members with connections in the industry can make it happen?