This visit was for an oil & filter change and to fix a steering wheel vibration above about 60 mph. Oil change took less than an hour. What the tech did discover, up on the hoist, were worn/ cupped front tires indicating a wheel alignment problem. He also discovered a sidewall buldge on one of the rear tires indicating a cord separation. I am going on a 1200 mile round trip next week and this was absolutely not safe. Will be back for new tire installation, balance and wheel alignment in next few days. Cavalier has serviced our 2006 Toyota Avolon for about 6-7 years now. They have some sophisticated test equipmetn, are thorough and do great work. Also ansewer my questions and suggest service I may want done in the future...like get new tires now.