Intermittent Shimmy when braking
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From: Tx
Intermittent Shimmy when braking
My 05 LS430 w/ 55k miles every now and then will shudder when I hit the brakes at speed. It did this for most of my long drive to Odessa a few weeks ago, but once there it was gone or greatly reduced. I don't think it's a warped rotor since that would be constant, right? No squeaks or anything, the steering wheel shakes and you can feel a little shimmy in the car while braking when this happens.
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From: Tx
Ya that's it then. Seemed odd it would come and go.
Honey, the steering wheel shimmied and it was the back rotor?
How hard is it to remove the rotors? I think Autozone or whoever can machine them for me.
Honey, the steering wheel shimmied and it was the back rotor?
How hard is it to remove the rotors? I think Autozone or whoever can machine them for me.
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From: Tx
Found a thread on rotor removal. So easy! Didn't even have to take the pads off to reinstall the calipers. Autozone doesn't turn rotors anymore, heard they used to do it for $5. O'Reilly does it for $12 each and now my car brakes as smooth as it drives. Thanks guys!
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From: Ontario, Canada
I recommend and use OEM pads. Changed the pads myself a few months ago - fairly easy job.
I get minor steering wheel wobble and pedal pulsating on the highway after my brakes have been brought up to operating temperature and I brake down from highway speeds. I believe my front rotors are warped a bit. Lexus recommends using an on-car lathe to machine the rotors, as opposed to removing them from the vehicle:
Resurfacing of rotors with an on-car brake lathe is the recommended operation to correct rotor run-out and thickness variation. The on-car lathe is installed in the same position as the caliper, ensuring that the rotors will be machined absolutely parallel to the brake pad and caliper assembly. An on-car lathe is designed to take into account all of the variations in the bearings, hub and rotor assembly and provides the greatest accuracy by eliminating virtually all run-out.
I get minor steering wheel wobble and pedal pulsating on the highway after my brakes have been brought up to operating temperature and I brake down from highway speeds. I believe my front rotors are warped a bit. Lexus recommends using an on-car lathe to machine the rotors, as opposed to removing them from the vehicle:
Resurfacing of rotors with an on-car brake lathe is the recommended operation to correct rotor run-out and thickness variation. The on-car lathe is installed in the same position as the caliper, ensuring that the rotors will be machined absolutely parallel to the brake pad and caliper assembly. An on-car lathe is designed to take into account all of the variations in the bearings, hub and rotor assembly and provides the greatest accuracy by eliminating virtually all run-out.
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Joined: Apr 2009
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From: Florida
Th whole car had a slight shake to it. Glad you found an easy fix.
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From: Tx
I spent $24 and had O'Reilly do it. The calipers are held on with two bolts, the passenger side caliper has a sensor to unplug before you remove it. Not a big deal at all.
You can see the two bolts in this thread:
https://www.clublexus.com/forums/ls4...-w-photos.html
This is about removing the rotor, there are two threaded holes you use to pop the rotor off after the caliper is removed:
https://www.clublexus.com/forums/ls4...for-rotor.html
If your rear rotor is warped this thread explains how to remove the rear rotor, you have to turn a 'star' gear to adjust the parking brake so the disc will come off:
https://www.clublexus.com/forums/ls4...-question.html
You can see the two bolts in this thread:
https://www.clublexus.com/forums/ls4...-w-photos.html
This is about removing the rotor, there are two threaded holes you use to pop the rotor off after the caliper is removed:
https://www.clublexus.com/forums/ls4...for-rotor.html
If your rear rotor is warped this thread explains how to remove the rear rotor, you have to turn a 'star' gear to adjust the parking brake so the disc will come off:
https://www.clublexus.com/forums/ls4...-question.html
Last edited by DaytonaSTi; Jun 17, 2010 at 02:42 PM.
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