I have a near full tread set of 235/40/18 Michelin Pilot Sport 3 Tires with about ~90% left. They were used 1-2k miles. A set goes for around $800 at Discount Tire I'll sell mine with ~90% tread for $600. I will measure the tread tomorrow. Selling because I sold my '15 WRX (I go through tooo many cars) PM me with any questions.