Hi Marty, we are sorry to hear about the vibration you are experiencing with your Defender LTX M/S2 tires. We recommend visiting an authorized Michelin retailer so the tires and vehicle can be inspected and balanced. If you’d like additional assistance, our Consumer Care team is also available at 866‑866‑6605 (Mon–Fri 8 AM–7 PM EST, Sat 9 AM–1 PM EST).