Ian, gotta love those massive front brakes on the S4 eh? As a side note, I was able to break loose the tires yesterday. I went to change lanes because I was behind some old geezer, was in 2nd gear, punched it, and all of a sudden, the car felt a bit squirrely just for a moment. Then I saw the ESP light on the dash come on. I was surprised this would happen with Quattro. Mind you, I do have the snows on now, but they are high performance H-rated ones.