"The drum the rear tire rests on is not flat, it is curved. It bends in the tire more, causing the excessive wear. And since you don't lean over to turn, it wears out the center.P.S. when riding on a road, the tire wear the most…"
"Most of the wind noise is generated by the helmet straps flapping back and forth.
Option 1: ditch the helmet.Option 2: rotate the strap before the ear a half turn so it stands out against the skin instead of laying flat against the skin and flapping…"