Aux drive belt

[talos]

Had one come off at the weekend, but it did'nt seem particulaly worn,
but it had shredded, I checked the pulley's in case one had jammed or seized, but all run free, does anybody know of a reason for this to happen ? The car has only done 30000 miles so the belt cannot be any older.

[800HDI]

Would of thought one of the tensioners must of come loose.

[BerlingoHDI]

What is the age of the vehicle though as rubber can deteriorate over time

[Coco]

Can't be over 4 years old as it's a Mk3

[talos]

Garage tells me one of the pully's was out of line, Ive no idea why, but they are replacing it.
This is all being done under Gtee so I cant complain.
Looking forward to getting it back now