Originally Posted by Romio
But look at the tread, there is grooves they go from the middle out, but if you switch, the outside would hit first then go in. Aren't the grooves designed to give you better traction and shoot water on the road away? If you turn them around, then water will be push to the middle of the tire.
Looking at the tread doesn't matter. Look at the sidewall. If its a unidirectional tire you will see:
"<-- Rotation"
Clearly stamped there.