As a mechanic I checked my partners car for its MOT, the rear tyres were getting close to the minimum of 1.6mm but still above and legal. She submitted her car to Halfords Ayr for test - Failed on both rear tyres and had 6 advisory items. We complained to DVSA who called the car in to check the items - Failure items overruled as the tyres were ok and 4 advisory items removed. Halfords were trying to rip the customer off for the sale of tyres, corroded springs and exhaust. Contacted Halfords customer services to complain and never received an apology ! Just told that it was the testers discretion to fail for tyres. Not the case as tyre tread depth is measurable so they either pass if above 1.6mm and fail at 1.6mm or below. They will never see my custom again.