[RKDinOKC]

Old Porsche mechanic once told me as the rear of the car squats under power the rear wheels toe out, conversely as the rear lifts under braking they toe in. This scrubs the rear tires, ie. faster wear.

My 951 would porpoise under hard accelerate do to the toe out. The rear tire with the most traction would turn the front end a little, as it turned it would put more weight and traction to the other tire turning it back the other direction. The front of the car would wag left and right, not more than an inch or so in each direction, not enough to put in any steering correction, but it was just enough that i noticed it and asked about it.