Took my Toyota Avalon in for new tires. Left and drove to county office (about 7 miles). Walked out of office to find a completely flat tire. Seems the mechanic did not replace all the valve stems. Went back to store, tire had to be replaced. After leaving store tires seemed fine, until I got on the highway. At highway speeds, the car pulls hard left. I am going to make a third trip to the shop in the morning, I will post how that one turns out!