Overall, this is a wonderful automobile-my 4th E Class Sedan. However, I have had a very bad experience with the Continental tires supplied in this sport model. I had 2 blowouts and a bubble in the sidewall of a third tire in 4 months of ownership, 5000 total miles. I admit that driving in the Northeast with potholes is stressful on the tires, but I have never had a blowout before. I suspect that these tires have a weak sidewall. Continental and Mercedes customer relations have been no help.I would recommend the luxury version with the smaller wheels in areas of the country with uneven roads.