Nope. Tires are fine. He's riding over a platform that has some give to it, somewhere between a piece of plywood and a trampoline. And don't go all snobby on him; he puts more miles on his bike in a week than you would in a good month.
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I stop for people / whose right of way I honor / but not for no one.
Originally Posted by
bragi 
"However, it's never a good idea to overgeneralize."