Hmmm... sound like I'm in a minority of one. My local Kwik Fit is trusted with all the tyre, exhaust, MOT and related work on all our cars, including the S8 and the Fiat Coupe. They're always competitive, thorough, and often don't charge me for stuff - e.g. stripping my 20FE wheels and tyres and fitting the 18 inch ones instead (not bought from them....). Maybe I'm just lucky
