I had the misfortune of travelling down the M1 on Monday night, through some very heavy rain and lots of spray. Normally I'd press on regardless and put my faith in the quattro system/ESP, but the highway warning speeds were indicating 50mph max & potential skids. At speeds approaching 100 if you lift the throttle when hitting large sheets of standing water the car jerks left then right. I was concerned because at these speeds any sudden movement could potentially send you into a skid. Plus the sudden movement is unwelcome when overtaking ar-tics! /ubbthreads/images/graemlins/crazy.gif If you keep the throttle open when hitting the standing water there seems to be less movement - is this right? I experimented with ESP on and off and this had no noticable effect on reducing the sudden left-right jerk. But decided it was best on.