I've read an old thread here about replacement disks and pads, however the last post was a while ago. Just wondering what peoples thoughts are now on rotor brands and pads that aren't as dusty as the OEM ones. Interestingly, my T5.1 has just clocked over 100K and just done a service. Mechanic said disks an rear were under spec, but the pads were about half left to go. I said, that's a bit weird for the rear to go first and they said you must have had the pads changed at some point. Nope, no pad changes. Is this normal? Both for the rear disks to wear out first, and secondly not even change a set of pads and the disk is already below spec?

Seeing as the van is getting a bit long in the tooth i'll be starting to do all the servicing myself. First car I have owned that I haven't serviced myself, and that's because it's the first diesel i've had, and the need for a OBD scanner. And on that front, whats the general consensus these days on the cheaper bluetooth dongles and phone apps for doing simple diagnostics?