Used Tyres 2nd Hand Tyres 145R10 155R12 165/70R13 175/70R13 average out at 75% tread (6mm) . We on average have more tread on our tyres 3 times more tyres than anybody else in Sydney our tyres are hand picked and best brands. We are the only tyre dealer showing in writing depth of tread eg 6mm = 75% 7mm = 87 1 2% etc on each tyre therefore each tyre s quality is easily seen by customer. On most occasions our 12 000 tyres will be sold at less than their tread depth value so you get a bargain.