>In visiting with a tire dealer he disclosed that the wide low profile
>tires that are on many high performance BMWs, Porsche have a life span of
>only 12 to 15 thousand miles because they get gummy at high speed and
>just use themselves up.

All tires used at this "high speed" would degrade equally, I'd think.
Low-profile tires will turn the same rpm at the same speed as a
higher-profile tire, for the same application (ie, same outside
diameter). I don't see why these "high-performance" tires would wear
faster, unless of course they're made of a softer compound...

Dave
--
Dave Carpenter

"Any sufficiently advanced technology is indistinguishable from
magic." -- Arthur C. Clarke