These were a huge improvement over the Mich. stock tires. I will buy a new set mainly because of their excellent handling and traction. I was getting cut off on the highway doing 70, and all I did was a slight turn of the wheel; the response was perfect--no swaying and no need for heavy breaking. That was the day I swore I'd buy them again. I still have about 5 or 7K left, and they still handle nicely, but with road trips coming up I will replace them tomorrow. They've provided me with over 30K miles of safety and great handling.