Originally Posted by
noglider
Some tires have arrows to indicate which way to mount the tire. What is the intention? If a rear tire grips better during acceleration with the arrow pointing forward, doesn't that mean the front tire would grip better during braking with the arrow pointing backward?
Yes, in theory. And some mountain bike tires are marked as such, with two opposing arrows. Mount the tire to roll in one direction if installing on the front, or the opposite direction if mounting on the rear. This is presumably for best brake and acceleration traction with certain tread "paddle" features. For road-oriented tires, tread paddles aren't nearly as important for traction, and the single directional arrow is likely for aesthetics or sound quality only.