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Unread 02-04-2012, 04:58 PM   #1
JeepPimp
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Can rear rotors warp??

Replaced my front rotors for the 2nd time in 7 months. Still having the same problem when I try to stop quickly at high speeds. The front end shakes abruptly with a loud humming. (Not an axle problem since it is quiet while I'm driving.) I replaced the rear brake pads 6 months ago and didn't notice any damage to the rear rotors then?

Should i be replacing the rear rotors? I didn't think this was a problem with the rear as much as the front.

Please help, thanks

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Unread 02-04-2012, 05:19 PM   #2
jeep04
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Front rotors are normally the cause of the steering wheel shaking while braking, the rear rotors you would feel in the brake pedal more so then the steering wheel.
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Unread 02-04-2012, 05:25 PM   #3
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Also even new rotors can cause vibation from being out of round, while i was the manager of midas for a few years we use to buy the cheapest garbage rotors for the customers cars and they would return saying that its worse then before.

But after a few times of this happening we would measure rotor run outon a new rotor and it would be out of the limits.
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Unread 02-04-2012, 05:25 PM   #4
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Ya, I deffinitly don't feel the shaking in the steering wheel. More underneath the vehicle
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Unread 02-04-2012, 05:30 PM   #5
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You might want to check tie rods or trac bar bushing , but that doesnt sound like a brake issue if its coming from underneath and you dont feel it in the pedal or steering wheel.
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Unread 02-04-2012, 07:01 PM   #6
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i slightly feel it in the brake pedal. it only happens when applying the break following high speeds coming to a quick stop.
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Unread 02-04-2012, 07:02 PM   #7
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Quote:
Originally Posted by jeep04 View Post
You might want to check tie rods or trac bar bushing , but that doesnt sound like a brake issue if its coming from underneath and you dont feel it in the pedal or steering wheel.
how do i check for these?
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Unread 02-04-2012, 07:36 PM   #8
billzcat1
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My money's on front wheel bearings.
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Unread 02-04-2012, 07:48 PM   #9
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do you hear any humming sound that isnt normally there, if so then it might be the wheel bearing.
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Unread 02-05-2012, 07:16 AM   #10
TeleBruce
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have you ruled out the ABS kicking in during a hard stop? That causes a vibration/humming that is normal, but it has to be a hard enough stop to make the car attempt to skid of course.
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Unread 02-05-2012, 07:22 AM   #11
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You need to check:
Wheel bearings(both sides)

Ball joints(all 4) my money is here,
Tie rod ends(all 4) and here
Track bar(mounts,bolts,bushings) and here
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Unread 02-05-2012, 10:59 AM   #12
jeep04
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Get someone who knows what their looking at and have them climb under the front end while you move steering wheel back and fourth a little and look for things that are moving that shouldnt be.

As far as bearings, jack up the front end and grab the tire at 12 and 6 and move up & down, there should not be any play. While its up grab at 3 & 9 and same this will check tie rods.
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Unread 02-05-2012, 11:22 AM   #13
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I think he means 12 and 6 to do the bearings then 3 and 9 to check BALL JOINTS. You will be feeling for ANY play.
I didn't re-read your first post but how many miles are on this truck ?
All this stuff might need to be done anyway.
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Unread 02-05-2012, 11:40 AM   #14
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Quote:
Originally Posted by Rocklobster View Post
I think he means 12 and 6 to do the bearings then 3 and 9 to check BALL JOINTS. You will be feeling for ANY play.
I didn't re-read your first post but how many miles are on this truck ?
All this stuff might need to be done anyway.
105k

Thanks.. I will check for these as soon as I can get to my car jack
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Unread 02-05-2012, 11:41 AM   #15
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thanks for all the replies guys. I will check for the bearings, tie rods asap and get back to you
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