Our trailblazer is in excellent condition with one exception. the tires leak air at the rims. we have had the tires removed from the rims to have the rims resealed and that lasts for a brief period of time. we have aluminum rims. it is our understand that the rims have developed spurs due to use. our trailblazer has approximately 67000 miles. it is housed in a garage and used daily. my husband often has to fill the tires before we can leave home. during the winter months he has to fill them if we take a 2 1/2 hour trip or if it sits overnight in cold. this is very disappointing and remains frustrating. thank you for your help in this matter. *tr