"SQUEALING OR SCREECHING TIRES"
I don't get this the only place I've ever gotten my tires to do this is on the track at high speed through a 180 sweep that was slightly off camber. I've yet to have this happen on my Boxster on the street or back road twisties. All I can say is you must have done something to get attention to yourself and if you didn't switch to PZero's and paint your Box a light color.
