Hello, I am having a problem with my brakes on my 'trep... when I am moving either forward or reverse, @ a slow speed, my brakes are grinding, I checked the front & back of my rotor, sound comes from front, the front seems ok as well as the pads, but the front left rear of the rotor seems like it is shot... I had a car accident on that side/wheel last year, it was bent way in, they supposedly put new suspension parts, brake,etc. Can anyone tell me why one side would wear down like that that bad, & other doesn not.. Also.. will it be expensive to replace all that? anyone know how much $$ I may be looking at.. Thanks for any input..