LS - 4th Gen (2007-2017) Discussion topics related to the current flagship models LS460, LS460L and LS600H

shudder when braking

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Old 11-05-16, 08:22 PM
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lex460l
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Default shudder when braking

Hey guys just wanted your opinion on what my issue is.......i had a lot of shuddering while braking on my last set of brakes......i replaced rotors and pads figuring that would be the fix, and it seemed to be temporarily, less than a couple thousand miles later the same issue is back.....do you guys think the rotors are warped already? or is there some other issue??
Old 11-05-16, 09:42 PM
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roadfrog
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What rotors did you go with?
Old 11-06-16, 06:04 AM
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superdenso
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Originally Posted by roadfrog
What rotors did you go with?
Care to wager on whether or not the Toyota "Pinnacle" of engineering rotors were used? Maybe the supply is different in Asia.

Last edited by superdenso; 11-06-16 at 06:07 AM.
Old 11-06-16, 08:04 AM
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SW17LS
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How many miles do you have on the new set of rotors? Are you sure the lug nuts are torqued down properly?
Old 11-06-16, 09:13 AM
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aeggroup
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A lot depends on the quality of rotors you installed. Which brand have you used ? Also, my mechanic told me that you need to be "gentle" on a brakes not to overheat rotors for first couple hours ( I'm not sure if it's true).
Old 11-06-16, 07:40 PM
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pmiller
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Have you had you tires road forced? My car would shake after I had my discs replaced. Road forcing took care of the problem. Lexus LS discs are too small for the weight of the car in my opinion.
Old 11-06-16, 08:36 PM
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lex460l
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Originally Posted by roadfrog
What rotors did you go with?
toyota/lexus lol
Old 11-06-16, 08:37 PM
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lex460l
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Originally Posted by superdenso
Care to wager on whether or not the Toyota "Pinnacle" of engineering rotors were used? Maybe the supply is different in Asia.
yes they were lol
Old 11-06-16, 08:38 PM
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lex460l
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Originally Posted by SW15LS
How many miles do you have on the new set of rotors? Are you sure the lug nuts are torqued down properly?
maybe about 4000 miles now and i think so in my manual it says something about 103 lbs to torque them to
Old 11-06-16, 08:39 PM
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lex460l
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Originally Posted by aeggroup
A lot depends on the quality of rotors you installed. Which brand have you used ? Also, my mechanic told me that you need to be "gentle" on a brakes not to overheat rotors for first couple hours ( I'm not sure if it's true).
i actually took it light on the brakes for more than a couple of hours lol i did it as long as i could avoided highways and all for a while
Old 11-06-16, 08:40 PM
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lex460l
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Originally Posted by pmiller
Have you had you tires road forced? My car would shake after I had my discs replaced. Road forcing took care of the problem. Lexus LS discs are too small for the weight of the car in my opinion.
im not sure honestly but i actually put on new tires right after i put of the brakes so I'm not sure exactly what they did but ill inquire about it
Old 11-07-16, 03:31 AM
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Sorry to hear about your issue. I know it's annoying, I hate it myself. I've heard that OEM rotors are crap and changed my rotors/pads about 2 months ago and till now no any issues.
I got these : https://www.amazon.com/gp/product/B001KO2IVO/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
It does not cost much, try it. Good luck
Old 11-07-16, 06:56 AM
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superdenso
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Originally Posted by lex460l
im not sure honestly but i actually put on new tires right after i put of the brakes so I'm not sure exactly what they did but ill inquire about it
maybe the tech that installed the new tires over torqued the lugs. However, either now or soon from now the Toyota rotors and pad combo develop glaze (high spots of pad material) and exhibit pulsation. I use stop tech crying drilled rotors (extreme), but a centric rotor with Akebono pads should clear things up. This topic has been discussed significantly on this site...be well
Old 11-07-16, 07:20 AM
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The OEM rotors warp easily, but not 4k miles easily. Somethings not right...
Old 11-07-16, 11:22 AM
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Originally Posted by SW15LS
The OEM rotors warp easily, but not 4k miles easily. Somethings not right...
exactly what I'm thinking


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