PILOT ROAD 4 GT. 150/60-ZR17 66W REAR TYRE. Chamfered sipe edges that help prevent abnormal wear. In extreme conditions & under heavy braking. Thanks to 2CT technology with brand new tread compounds & a. Redesigned tread pattern, Michelin Pilot Road 4 tyres last on average 20%. Longer than Michelin Pilot Road 3 tyres. Thanks to their new XST+ sipe technology, Michelin Pilot Road 4 tyres. Reduce braking distances on wet roads and very slippery surfaces. Like white lines and pedestrian crossings. Pilot Road 4 tyres provide optimal grip when cornering because. Of their patented tread pattern and specific tread compounds. Tread grooving and siping also increase the ability to clear water. If the reason for return is due to a fault in any way picking mistake, wrong part in packet, faulty etc. Then please send us a message to see how we can rectify this for you.