So, cambelt every four years (according to those who profit from cambelt changes), brake fluid every two years (according to those who profit from brake fluid changes), now tyres every four years......excuse me if I guess who recommends that.

How can it be sensible to run one of these as an occasional use vehicle, better to hire a camper when you want one, if you're doing a few thousand miles a year they are very expensive miles!!!
I use my T6 every day, so my tyres will not be on for four years, but we know this only happens in Rip Off UK, no other countries do this!