Brake rotor question
#1
#3
Not sure. He just changed the rotors, the pads were changed a while ago but he said they still have 60% life left. I guess I'll give him a call and ask him what part number he used because they definitely don't look like right. Also he said it may not feel right for a day or two while they bed but it shakes and is noisy under heavy braking, and it just doesn't feel right.
#4
Should have changed the pads at the same time. You're going to get some grooves in your new rotors before those slots shave down the pads. ie. it will take longer to properly bed the pads.
I've had slotted rotors on two cars now and they vibrate a bit through the brake pedal/sound different when you apply the brakes. Reminds me of airliner landings when the pilot hits the wheel brakes (they use slotted rotors too). The dimple drilled holes look cool but don't do a thing for braking (full depth drilling can weaken the rotor) and actually increase your stopping distance due to less braking surface on the rotor for the pads to grip.
Whatever you put on the car, TORQUE the lugnuts to SPEC and no more. Lugnuts that are too tightly torqued WILL warp your rotors.
If you're going to track/autocross your car you might want to do some research on the best rotor/pad combos.
Some links to info on brake rotors:
http://automotivethinker.com/brakes-...d-and-warping/
http://www.surrealmirage.com/subaru/...tml#gasslotted
http://www.redline360.com/garage/bra...hich-is-better
I've had slotted rotors on two cars now and they vibrate a bit through the brake pedal/sound different when you apply the brakes. Reminds me of airliner landings when the pilot hits the wheel brakes (they use slotted rotors too). The dimple drilled holes look cool but don't do a thing for braking (full depth drilling can weaken the rotor) and actually increase your stopping distance due to less braking surface on the rotor for the pads to grip.
Whatever you put on the car, TORQUE the lugnuts to SPEC and no more. Lugnuts that are too tightly torqued WILL warp your rotors.
If you're going to track/autocross your car you might want to do some research on the best rotor/pad combos.
Some links to info on brake rotors:
http://automotivethinker.com/brakes-...d-and-warping/
http://www.surrealmirage.com/subaru/...tml#gasslotted
http://www.redline360.com/garage/bra...hich-is-better
#5
Should have changed the pads at the same time. You're going to get some grooves in your new rotors before those slots shave down the pads. ie. it will take longer to properly bed the pads.
I've had slotted rotors on two cars now and they vibrate a bit through the brake pedal/sound different when you apply the brakes. Reminds me of airliner landings when the pilot hits the wheel brakes (they use slotted rotors too). The dimple drilled holes look cool but don't do a thing for braking (full depth drilling can weaken the rotor) and actually increase your stopping distance due to less braking surface on the rotor for the pads to grip.
Whatever you put on the car, TORQUE the lugnuts to SPEC and no more. Lugnuts that are too tightly torqued WILL warp your rotors.
If you're going to track/autocross your car you might want to do some research on the best rotor/pad combos.
Some links to info on brake rotors:
http://automotivethinker.com/brakes-...d-and-warping/
http://www.surrealmirage.com/subaru/...tml#gasslotted
http://www.redline360.com/garage/bra...hich-is-better
I've had slotted rotors on two cars now and they vibrate a bit through the brake pedal/sound different when you apply the brakes. Reminds me of airliner landings when the pilot hits the wheel brakes (they use slotted rotors too). The dimple drilled holes look cool but don't do a thing for braking (full depth drilling can weaken the rotor) and actually increase your stopping distance due to less braking surface on the rotor for the pads to grip.
Whatever you put on the car, TORQUE the lugnuts to SPEC and no more. Lugnuts that are too tightly torqued WILL warp your rotors.
If you're going to track/autocross your car you might want to do some research on the best rotor/pad combos.
Some links to info on brake rotors:
http://automotivethinker.com/brakes-...d-and-warping/
http://www.surrealmirage.com/subaru/...tml#gasslotted
http://www.redline360.com/garage/bra...hich-is-better
#6
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Gary
#7
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