rubbing noise. mechanics?
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Old November 11th, 2008, 07:26 PM   #1
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rubbing noise. mechanics?


Meant to ask about this a while ago and didnt.

If i have my car in the air and spin the front tires i hear a rubbing. like the pads are rubbing the rotors. I guess this is pretty common. but know that i think about it if that things isnt tracking straight i geuss it could be the cuase of some vibrations and obvisously the cuase of the rotor being cracked to hell now.

I noticed this before the road course so its not due to that warping it. Its like just maybe a third of the rotor that you hear the rubbing as is spins around but it is on both sides up front if i remember correctly.
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Old November 11th, 2008, 07:43 PM   #2
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Originally Posted by 07stanggt View Post
Meant to ask about this a while ago and didnt.

If i have my car in the air and spin the front tires i hear a rubbing. like the pads are rubbing the rotors. I guess this is pretty common. but know that i think about it if that things isnt tracking straight i geuss it could be the cuase of some vibrations and obvisously the cuase of the rotor being cracked to hell now.

I noticed this before the road course so its not due to that warping it. Its like just maybe a third of the rotor that you hear the rubbing as is spins around but it is on both sides up front if i remember correctly.
Have you checked the slides on the calipers? Are they still greased well? These are the two "beams" the moving part of the caliper rides on. I've seen a lot of vehicles that have worked the brakes hard and the lube is gone. Even if the boots are still good.
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Old November 11th, 2008, 07:55 PM   #3
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07, the pads always drag on the rotor, you are hearing a totally normal sound that resides in 100% of cars. If you spin the wheel and it binds not making a full rotation when you give it an honest spin, then you have a piston in the caliper hanging up.
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Old November 11th, 2008, 09:29 PM   #4
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Originally Posted by Emay View Post
07, the pads always drag on the rotor, you are hearing a totally normal sound that resides in 100% of cars. If you spin the wheel and it binds not making a full rotation when you give it an honest spin, then you have a piston in the caliper hanging up.
+1 you're pads are always in direct contact with the rotors.

07, do you have a stock setup? are your pads wearing evenly?
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Old November 11th, 2008, 09:39 PM   #5
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Originally Posted by Emay View Post
07, the pads always drag on the rotor, you are hearing a totally normal sound that resides in 100% of cars. If you spin the wheel and it binds not making a full rotation when you give it an honest spin, then you have a piston in the caliper hanging up.
Alright thanks. I thought so. its rubbing more at one point then others though becuase the noise is at a certain points like shh shh shh, you know. But the wheels spins pretty easy.

Originally Posted by beefmobile View Post
+1 you're pads are always in direct contact with the rotors.

07, do you have a stock setup? are your pads wearing evenly?
No its not stock its stop tech rotors and hawk hps pads. Dont know if they are wearing even i'll know in a couple of days though i need new rotors.
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Old November 12th, 2008, 11:08 AM   #6
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Could also be a warped rotor if it doesnt spin completely and grinds in one area and not another?
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Old November 12th, 2008, 11:43 AM   #7
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shhh shh shh says to me your rotors didnt wear evenly.
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Old November 14th, 2008, 11:44 PM   #8
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Yeah you will always hear the rotor dragging. If you hear it when driving, then it's a problem, or if it is ahrder to spin the tire. The reason it skips is because the rotor isn't perfectly true, but I wouldn't way it is warped or a problem, without actually measureing runout and thickness variation on the rotor, cars almosta lways will make the sshh shh sssh sound. If yoe rotor was untrue enough to matter, you'd feel a pedal vibration.

If the rotor is CRACKED, though, you must replace it, now.
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