This is our 4th tire blowout in 18 months, 1st two caused by pothole in front of dealership were covered by dealer, last two on our dime , my wife is now afraid to drive the car.The Mercedes dealer says it's because they are low profile tires, which is probably true, but why put them on the car if you know it's a problem. I guess they need to sell more tires, which they have done but they have also lost a customer, this was our second Mercedes and our last.