On any cornering maneuvour the wheels seem to 'crab' with the associated clug clug noise (as you can gather I am no car technician). I had 11000 miles on the clock and took the T/reg to the dealer from whence it came. His explanation? Tyre pressure in front wheels wrong (under inflated) causing uneven wear on the tyres and causing problems with the four wheel drive transmission - hence crabbing andd clug clugging noise. Solution? Buy new tyres and will probably go away. I insisted that he fit new tyres and prove this himself before I got the car back. No tyres in stock I insisted he take them off showroom vehicle which he did (fair dos). Lo and behold did not solve the problem. Going to put a new dif box in next week to see if this will solve the problem. VW have sent him letter saying that I should check tyre pressure every week and check and measure comparative tread wear on each tyre every two weeks!! with aview to rotating tyres (every two weeks!!)?? What a load of cobblers. Has anyone else had this problem?