KF are not just tyre fitters. They may have started out in that way but they service and repair vehicles as well.
I speak as I find and although I would not have my vehicle serviced by them I have never had cause for complaint when they've fitted pads, exhausts, coil springs etc. I am always been invited to see the affected part before agreeing to any work and I always watch the inspections and repairs very closely from outside the bay.
Once or twice in the past, the KF fitter has replaced a light bulb FOC rather than fail my car's MOT and on another occasion fitted an exhaust clamp, again FOC, to repair a broken exhaust weld during an MOT. I guess I'm just lucky to have a good KF depot.