So far, two of four tires have had tread separation issues on the outer edge. I believe this is the "summer" compound portion of the tire. These tires have done their duty after 64,000 miles and still had a ways to go to get down to the tread depth indicator bars...except where the bulges started to form! Overall, Toyo has lost another customer. I've been a Michelin buyer until tough times led me to consider Toyo and General for our other car, I seem to have been dealt yet another lesson learned on "you get what you pay for". It's back to Michelin for me and I truly hope that the Toyo Versado LX tire has not contributed to any deaths.