This website http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors.htm is a good source on how rotors work. This site will also help on deciding which rotors are best for your vehicle.
Brembo is a brand that makes car parts and equipment. There stock rotors as well. Their street rotors seem to have a good reputation and are reliable. Very smooth ride, quiet, withstand high stress and temperatures.
It could be that the brake pads are dragging on the rotors.
Yep.
Could be the pads are worn down replace your rotors and pads could also be runout on the rotors
It could have either.
No it will not, The front brake rotors are out of round. Needs replaced are turned, both rotors.
could be bad rotors, or brake pads wearing unevenly, which would result in bad rotors.
If the rotors are worn too thin, they could snap apart while braking, leaving you with no braking power at all.
Yes, both rotors should have the same type of finish on them for even braking. They could both be new, used, or both resurfaced.Yes, both rotors should have the same type of finish on them for even braking. They could both be new, used, or both resurfaced.
possibly warped rotors.Feels for grooves on the rotors(when rotors are cool,your rotors should be smooth ) if you feel them you need to replace them,and dont forget to replace your pads too.Worn pads grind your rotors and ruin them.
Could be that the rotors are "out of round" and pulsate Could be a malfunction in the ABS system
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