Quote:
Originally Posted by GregWeld
Unfortunately, the rating that is of the most interest to consumers is the one that appears to be the least consistent. While the Treadwear Grade was originally intended to be assigned purely scientifically, it has also become a marketing tool used by manufacturers to help position and promote their tires.
UNQUOTE:
In other words -- one guys 200 might be the other guys 140.... These tests just aren't scientific and there's lots of fudge room.
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Ergo why Michelin took the Pilot Sport Cup from 80 to 180 last year.