As road rims move toward wider profiles, it appears they are also making the rim center shallower. We are seeing issues with tire mounting with a lot of these newer rims.
The wheels I build for a local shop's branded line are no exception. The most recent batches of rims I've built have about a 27.5 mm outer width and the center section is almost flat. Mounting tires on these is a real bear, I can tell ya, as there is do deep center well to move the bead into.
