Originally Posted by
notzofast
Threads provide traction.
I never said that they didn't. (Conversely, never said that they did.) The question is, are bike treads
directional?
Sand etc. isn't
liquid and the treads don't act as
pumps as do the directional treads on a car.
Besides, the bottom line is that if manufacturer intended the tire to rotate in only one direction, it would be marked clearly on the tire.