In my 20 years of driving these are the first run flat tires I've ever had and I would never purchase them again. Since I've been driving I've never had a bubble or tire ever shred on me until I bought this car with these tires. On this car I've had an issue with all 4 of the original tires. 3 of them had bubbles and the 4th was going to shred. With run flats I thought they were supposed to be more durable but I've found that to be the opposite. When the last one developed a bubble before I went on a long trip I called everywhere and they were on national back order and the only place I could get the tire was from the dealer which ended up costing me more. They also charged double to mount and balance because it's a run flat. I've also had other low profile tires and never had the issues like I've had with these.