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what could cause the brake grinding noises?! > what could cause the brake grinding noises?!
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what could cause the brake grinding noises?!

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Old 12-28-2009, 05:06 AM
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I drive a Toyota Hybrid...
what could cause the brake grinding noises?!

It just start happening all of sudden now days, it worry me since i drive 100 miles highway everday

brakes pad are Hawk HPS and Rotors are some 3rd Party Slotted rotors i had not more than a year, they were braking like magic before but all of sudden they start making crazy grinding noise when my car brake to about a complete stop. So when i get my tires mounted i also have the guy check out my brakes they say they look perfectly fine, and say there were at least 50% life left.

so what could have cause this? low brake fluid? some hidden crack?
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Old 12-28-2009, 09:01 AM
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My hawk pads on prev cars always made noise, it was just the nature of the pad as far as every one knew.
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Old 12-28-2009, 10:10 PM
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My brakes make "grinding" noises when ABS or ESP engages.
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Old 12-28-2009, 11:07 PM
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maybe a wheel bearing? You should jack up the car and spin the wheels. If the wheels spins freely..then your wheeling bearing is shot.
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Old 12-29-2009, 04:21 AM
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i'm, also having the same problem. "squeaking" sound when i'm breaking to a complete stop.
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Old 12-29-2009, 03:20 PM
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I drive a Toyota Hybrid...
Originally Posted by dv-12 View Post
i'm, also having the same problem. "squeaking" sound when i'm breaking to a complete stop.
no those are different, i am having "METAL GRINDING METAL" noise
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Old 12-29-2009, 03:21 PM
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I drive a Toyota Hybrid...
Originally Posted by TemjinX2 View Post
maybe a wheel bearing? You should jack up the car and spin the wheels. If the wheels spins freely..then your wheeling bearing is shot.
hmm what do you mean by spin freely? i might try that out....
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Old 12-29-2009, 09:26 PM
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white and whiter
Originally Posted by kirax2 View Post
hmm what do you mean by spin freely? i might try that out....
RWD front wheel should spin freely when off the ground regardless. if your front wheel can't be spun by hand when off the ground that only means you have something that's wrong with your brakes.

unless you see excessive oil leak out the hub of the bearing or hear grinding from the bearing when you spin it your wheel bearings are fine.
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Old 12-29-2009, 10:42 PM
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Worth a shot to check it out.

its free and only takes about 5min of your time.

http://www.youtube.com/watch?v=gMbby4UfkMk

http://www.youtube.com/watch?v=JSsC-lWB1lg
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Old 12-29-2009, 10:55 PM
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2005 w203 c230 sport sedan
if you want to check wheel bearing, then jack it up and grap the tire up and down or left and right. shake it. if theres free play then its wheel bearing problem.
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Old 12-30-2009, 02:57 AM
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I drive a Toyota Hybrid...
holy **** no wayyyy if i have that problem should my steering wheel shake like crazy when i drive on the hwy?

ok i just did that youtube video thing and my bearing are fine

anyway i guess i will just change my brakes pad and rotors + fluid flush just stop the worry and see how it goes
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Old 12-30-2009, 06:21 AM
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white and whiter
steering wheel vibration left/right = front wheels. up/down = rear wheels.

most likely it's your wheels are out of balance.
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Old 01-01-2010, 11:03 AM
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2008 ML350 4matic
try this....

while driving at 30mph or so, windows up, radio and ventilation off, lane change hard left then right or the other way what ever and listen( no braking). A hard swerve will put a heavy load on each of the front wheels individually. You will hear a bad bearing if there is one, otherwise, cheap pads or cheap rotors or both.
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