Right now know why belt snapped ..some garage put tensioner pully on back to front useless sods..so it never ever spun!! god knows how they tensioned it .I hate garages ..nearly all useless..anyway my mate who has never serviced anything, but was serviced just as he bought it.2 years 7000 miles later belt rubbed through only about 3mm thick!!.Not bad really 2 years no spinning pully !!! lots of rubber dust and rusty pully apart from where it rubbed...