I also use the YokohamasT215/45/17TOY tyres on my CT200H. I have just renewed my front tyres as I picked up a puncture. They were still legal but they had been on the car for three years and had covered just under 30,000 miles which, given the state of UK roads, I thought was very good. The rear tyre I replaced last summer had covered nearly 40,000 miles since I purchased the car, and may well have covered a lot more before it came into my possession.