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Originally Posted by BigBrother
To do with discussion in the other thread - temp readings on a drivers-side abusive course were 128 inside, 130 middle, 133 outside on the drivers side front. And that's with -2.7 degrees on that wheel and 44-45 psi running pressure - and still coming dangerously close to rolling it too much. My grease pencil marks were inderterminate; they wore off further down than they should but only on runs where I botched a corner and pushed too much - and every time I marked the tires (3 runs out of 6) I ended up doing that, LMAO. The temp readings were consistant though, 5 to 8 degree spread from inside to outside on that wheel. Passenger side was unreliable data; the finish left me with the passenger wheel inside and spinning wildly, so the inside edge was consistantly reading 8 or 10 degrees over the middle and outside 'cuz it got heated up right at the finish. Grr. Anyway - I still say these cars need -3* in the front with DOT slicks. Everything says so, pyrometer, wear, everything. I can't believe it's worth giving up that grip to have a little less wheelspin under exit IMHO. :shrugs: We'll see, when I go to get the alignment fixed I'm gonna go for -3 even on each side.
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I've run 3.0 degrees of negative and it certainly helped in the corners. The problem I've had at the higher negative settings, in DS, is that the inside front only has a very small strip of rubber on the ground in a hard corner (almost no torque), so I was able to spin the fronts more easily and couldn't get on the gas as quickly at exit. Result, I was slower. I pulled way back to -1.5 as an experiment and I've been a little quicker -- but I changed my driving style to accommodate -- I braked late, coasted through the entry of the corner (no power, no brakes), tried to make almost a 90 degree turn out of everything, and was then able to accellerate hard coming out of most corners. Result, faster than before.
BTW, I bought a pair of used 225/45 x 17 Hoosier A6s from a guy a couple of years ago -- supposed to have some life left -- I ran them on the rear to save some money (because I was trying to be cheap after I'd won two new A6s from Hoosier after a National Tour Event win in DS) -- so... I swapped ends on the very first hard corner. The tires corded after one run -- but thay only cost $10 so I couldn't really complain, and he had no way of knowing how little life was left. So much for being cheap!
Scott