At 03:58 PM 3/6/2011, Karl Wolz wrote:
>According to my brother-in-law, who is a Discount Tire manager, radial
>tires, even the early ones, were not unidirectional; the whole thing was an
>old wives' tale of sorts.  No one really knows where the rumor started, but

Could be.  I was one of the early adopters of the Michelin X (40,000
miles on a tire?  Unheard of!), and I *think* I remember reading in
Consumer Reports of the time about the front-to-back rotation.  I'm
quite certain it was in Consumer Reports of a later time that I read
it was no longer necessary.  Not that CR are always correct by any
means, but they do have access to primary sources.  And it wasn't
that they were unidirectional as such, but that once they'd been run
in in one direction, wasn't good for them to switch.

Yours,
d