If he has been replacing his 1 year and 7000 miles tyres on a garages word he must be an idiot. the garage will be having a right laugh and they will be selling the old tyres as part worn for personal profit.

I would agree. The way a car is driven is the primary cause of tyre wear, I drive primaraly for economy and a st of tyres lasts me about 30,000 miles but in my youth I could get though them in 10,000, and cars weren't as fast then. Surely he must be able to see the depth of the tread before they are replaced, even if they have worn unevenly they could still well be legal.

Im a retired cab driver and i alwys got between 50000 and 100000 kms from my tires,although i did rotate them every 10000.Pirelli 6000 were the chosen tyres by cabbies.

Have seen lots of derogatory comments online about P6000's, i found them to be very good, reasonably quiet, supple, grippy and wore well.

As you rightly say, you can't beat sensible rotation to get the best from tyres, most drivers too bone idle to bother, don't even have the strength to wash their own cars any more here, people have too much money, that'll change.

Swap my tyres front to rear every year but never side to side which can accelerate wear as the tyre gets used to rotating the opposite way. Many tyres are directional thus cannot be changed side to side anyway.