I thought the theory was to downsize the width, meaning more weight carried on each square inch of tire contact area, thus, more traction.
Not sure what impact rim size would have on traction, all other things equal. But yes, smaller rim would have more air due to tall sidewall, and thus, more cushion in the ride. How much? No idea, but in theory you're gaining a little baby air bag shock compared to lo-profile tires.
|