I recently saw a Touareg on a dealer forecourt which had strange tyre wear. The car was just over a year old and had done 8000 miles. The two offside tyres were barely legal with uneven wear on the rear tyre(less tread on outside edge) . The near side tyres appeared fine. What could be the cause of this uneven wear? I know its common to swap the front tyres with the rear in a front wheel drive car to get more life out of them, but a Touareg is 4WD.