Thats is fooking ridiculous money. Places charge £18 per wheel for a tyre change on a car which includes a new valve and wheel weights........ On a loose set of wheels should be no more than about £7.50 a wheel I got stung big time swapping mine over as when I enquired how much to swap all 4 tyres over on loose wheels he stated " 20 quid mate". I said , lovely job only to find out when I went back to collect he meant £20 per wheel..... we then proceeded to fall out , but thats another story, piss taker I think if you have a ring round some places still charge a fiver if you buy the tyre with them but even at a tenner per wheel, its getting dear