Originally Posted by
cthenn
I'm not understanding what you are saying. I wouldn't ever want to "use up" a rear tire then put it up front.
This is exactly why I rotate when I do...have them be worn out (or close enough) at the same time. I have no scientific reason why I rotate the rear up front when I do, but I'd be a little sketched out if the front was really flat. Even if it does not affect the performance in any way, I feel better when I rotate the tire up front and it still looks newish.
I never suggested that. I said, "When you use us a rear and move the front there...." The understood corollary is that the used up rear is discarded.