Can anyone advise at what mileage the belt driving the water pump, alternator, a/c unit etc should be changed on my 2001 320ci as I can't find any reference to it in the service info or in the car's handbook. Mine has done close to 59k miles and still looks ok so should I change it now? Many thanks for any advice. PS: thanks allso for earlier advice on control arm bushes and handbrake adjustment, now all done.