if the dealer hasn't run out of patience?! It is I who have run out of patience. Changing a tire is a pain in the ass, and I've now done it 8 times for nothing. If a *professional* bike shop can't give me the right tire twice in a row while having the right tire right in front of them for reference, that's it. They got two chances, but this time I'm getting a full refund and going elsewhere.