The set I tried had such a wobbly tread that they almost touched the seat stays. With the bead aligned as evenly as possible to the rim edge the tread wobbled almost 3/16" side to side, and near the carcass seam there was a huge sudden wobble in it. I got a replacement set from Syncros and they were slightly better but only slightly. The wobble was bad enough to feel as shake in the handlebars on the first set. I think they're still sitting in the storage room with almost no miles on them.