Expert: Sean Halliday - 11/7/2006

Question
okay, well i just took off the two front tires and noticed a pretty good amount of rust in between the rotors and on the brakes. I also noticed tow grooves that were about an 1 1/2 inches apart on the rotor, both looked as though a pen tip could fit in them. I'm guessing this could be the result of the grinding? But i haven't taken off the brake to see what did it. Sorry for the two follow up'son one question.
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-----Question-----
If my wheel bearings were dry in my 2000 Nissan GXE after sitting for about 2 years, how would i go about fixing this. Is it something i could do on my own or would i have to get it done by a professional. If i can't do it myself how much would u expect it to cost? Thank You
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Wheel bearings dont usually go  "dry".They are sealed units and can sit for years without maintenance.What makes you think you have a bearing problem?.There are other factors which might be considered.Rubber boots,fuel,what condition are the d/shafts in?.As this car is a 2000 model i dont think you will need a lot of fixing because it sat for 2 years.If you do have any noise from the wheels i would look at the tires first and it would be a good idea to have them replaced if they show any signs of fatigue or cracks.The cost of replacing wheel bearings depends on the shop but usually its around $300 per wheel,,,parts included.

Answer
Scored rotors are caused by particles of dirt getting trapped between the pads and rotors.I have seen cheap replacement rotors burn out in one year so if i were you i would buy a good brand and spend a bit more replace both pads and rotors and your problem should be solved.I wouldnt buy ceramic as it is a waste of money.Ordinary semi metallic are good enough as i have had my pads on my Toyota for nearly 4 years.