Can anyone tell me if changing the front roters is neccesary when replacing pads on a 2003 Accord with 87000 highway miles. Original pads are on the car with no vibration when braking. Learned that the rear calipers have to be screwed in to compress, but not sure on front. Any insite would be appreiciated, have heard that new aftermarket rotors are almost as cheap as turning. Also is it hard to remove the rotors, any tips.