I was replacing my rear Continental ties last week and was glad I did. While putting on the rear tires I requested that they pull my front wheels and rotate. When they did we found that the inner side walls had cracked. We are not talking the typical dry rot crack, we are talking about six inches on both tires. I had 9/32 of tread and after a few phone calls thet gave me a 50% adjustment. It you are running these tires, please take the time to inspect the inner side walls. 30,000 miles on the fronts coded 0807 with 9/32's left. I got just over 61,000 miles on the rear factory installed tires coded around 3004.