I purchased a 1999 C230 approximately one month ago. Within the last week, I have noticed a rubbing or grinding sound from my left front wheel when making a left or right turn at slow speeds. The car has 48,888 miles on it and seems to have been well maintained. Any ideas regarding what is wrong and is it the type of thing that is covered under warranty? I hope o as i am soon out of warranty. Thanks for any help on this.