Car been in for a service 28000 on 1 set of tires not bad at all. However had it not been for a groove worn on the inside edge of each tire 25mm wide x 8mm deep i would think i would have got another 15.k There is 6mm of tread left across the full width of the tire but the inside edge of each is down to the steel wires. Car only 15 month old never bumped a kerb. Either car set up wrong or tires have a major fault. ?250 each + Vat Ouch!!!