I had a sidewall blowout in perfect highway conditions after a mere 3 months of usage, max 3,500km (2,000 miles). I called Michelin to register a warranty claim for manufacturing defect and they fought it tooth and nail, saying it was a road hazard, despite no nail or debris being found. They offered me 40% off a new tire, but I fought for more and sent the inspection report to them via an authorized Michelin retailer. Finally they offered me a 90% rebate to replace it. Despite being brand new tires, I was not at all impressed with the way my SUV handled in Quebec slush and ice with these tires (zero traction, lots of slippage). I plan on going back to Toyo or Nokian after this winter season has ended.