Keep in mind that treadwear ratings aren't very comparable between different brands:
Quote:
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The Department of Transportation requires each manufacturer to grade its tires under the Uniform Tire Quality Grade (UTQG) labeling system and establish ratings for treadwear, traction, and temperature resistance. These tests are conducted independently by each manufacturer following government guidelines to assign values that represent a comparison between the tested tire and a control tire. While traction and temperature resistance ratings are specific performance levels, the treadwear ratings are assigned by the manufacturers following field testing and are most accurate when comparing tires of the same brand. (emphasis mine)
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That info was taken from this page at The Tire Rack:
http://www.tirerack.com/tires/tiretech/general/utqg.jsp
BTW, I'm currently running the Azenis ST-115 on my WRX. Very nice for the price, IMO . . . quiet, sticky, and predictable. The only caveat I'll give is that they're a bit mushy at pressures suggested for the OEM RE-92s (the pressures listed on the door jamb), and require some extra psi for the best handling (at least, they did for my car). I think factory recommendation is 33F/29R, and I'm running 39F/35R, and they turn in nicely now. I can't speak for treadwear, though, as I've only had them for one season.
Tort