Hi guys Bit of a weird one this... I own a B7 S4 and for a while I've noticed a vibration/rumbling noise and sensation when turning slowly. Most noticeable turning out of supermarket car parks etc. Does not need to be full lock, about half way it will start. Seems to be coming from front wheel area. Does it in both directions. Nothing noticed at speed or when straight. My ATF fluid in the gearbox (the front diff is built into the gearbox right?) was changed only a few thousand miles back by Audi when one of the ATF cooler pipes split, so don't think it will be the gearbox fluid needs changing. Any idea's what could cause this?? Really keen to get it solved!!