NO idea Nicky - mine came with the vehicle - hunt around I'm sure you'll find them - perhaps put an ad in the wanted as people oftern change them over on new vehicles.
Yes mine are a bit harder at 80K Km - although I reckon that is due to age not kms.
I don't push it and do a lot of highway cruising so 80K Km is resonable for me. (I got 110,000km out of a set of BFG AT's and still had meat on them;))

