The problem I had early on with front tyre ware on the T5 turned out to be a manufacturing problem, as the front end assembly on a T5 Cali had nothing to do with other T5's and was in effect a Porsche Cayenne front axel assembly. The dealer had to shear the locating studs off, and refit the whole assembly; Mine was off the road for a few days getting fixed. I had bought mine second hand (1 year old), with 14k miles and new front tyres. I couldn't understand that, until my fronts scrubbed out after 10K (michelins); following the fix I could get 30k miles no problem.No they told me it was going back to Milton Keynes to be sorted after I'd traded it in. Asked the dealers what happend to it in the end? He told me they just sold it on!!! I was very disappointed by this. The car had a serious issue.
I doubt any of this is relevant to a T6.