I purchased a 2005 Sorento 10 days ago & noticed a rubbing sound everytime I back out of a parking space...I inspected the pssg front tire today & noticed that the outside tread is chewed up from the rubbing. I took it to the dealer (the clock needed to be replaced also), and they said they "can't find where it is rubbing, but they know it is rubbing somewhere since the tire is chewed up" (I have 250 miles on the car). They said all the parts and bolts are where they are supposed to be and they want me to monitor it to see what happens. Has anyone else had this problem? Any suggestions? I am very dissapointed & frustrated. :-(