I've been told by many people and tire shops that once you've driven on a steel-belted tire, even a non-directional tread tire, for a while, you should never mount it the other way and drive on it, as the belts have all "settled" a bit into their given direction. (That is, ANY tire should be re-mounted if you're going to cross-rotate... they say direct cross-rotation when out with the old bias-ply tires of the 60's...)
When I've had snow tires unmounted, tire shops have always marked them with chalk to show the orignal direction of rotation, and I asumed this was for this reason...
Anyone?
-Paul Demeo
1990 780T
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