QUOTE (aviator79 @ Jul 16 2008, 11:13 AM)

everyone needs to keep in mind that the stock MS6 tires are MAX PERFORMANCE Summer tires! not UHP's and especially not all seasons. So first decided if your going to keep the car handeling like it does and if not you can go with a UHP and it should work fairly good compaired to the stock tires if you get the high rated UHP's like the General exclaim or S.drives. But to get the most out of the handleing you want to stick with a max perf summer tire IMO for use in the summer. If you get a all seasone you are sort of screwing yourself.
The terms "ultra high performance and "max performance" are kind of arbitrary --they appear to relate to the speed ratings, which have naught to do with handling and everything to do with temperature tolerance. Much better predictors of how a tire will handle are its internal constriction, its treadwear rating, and whether there is a continuous rib in the tread area. Internal construction: generally, rayon-cord carcass ("sidewall plies") tires perform marginally better than polyester-cord carcass tires (and aramid-cord carcass tires perform the best of all). The treadwear rating is fairly proportional to how soft the tread compound is, so the tires with lower treadwear ratings tend to stick better than tires with higher treadwear ratings. Tires that lack a t least one rib that is continuous (unbroken by a channel or sipe) around the tread tend to "hunt" and steer less precisely than tires that have a continuous rib. (Note: the continuous rib need not be a straight line: see the Yokohama AVS Sport "Y" design, which is a continuous zig-zag, but is unbroken around the tread.) And all-season tires are decent in light snow and acceptable in the dry, but in the rain, drive on all-season tires as if your Speed6 were a Toyota Avalon, because that is the level of grip you will get on wet pavement.