Thanks tjts1,
I never thought of that, is the reason to go to a taller profile to protect the rim?

I've have two excellent rear tires now. Next set of tires I think I'll look at the 16" wheels.

The wheels/tires on it from the factory have a very slight front to rear diameter difference. How sensitive are these setups calibrated e.g., if I put four identical sizes on is it going to have a caniption?

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