Volvo RWD 120-130 Forum

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brake rotor minimum thickness 120-130

posted by  Danny on  Mon Oct 29 07:40 CST 2018
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last visit: Mon Oct 6 22:01 CST 2014
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I'm getting a pulsing vibration when applying the brakes. when I had this problem in the past I checked the front right rotor, and it was either warped - not true, and causing the problem. I turned it down minimally and got it relatively true. I do not know it's current thickness, but may have another one that I can swap, but needs to be cleaned up. I have searched the archives for posts where I recall a discussion stating that the manual's stated minimum could be exceeded by a little bit. I cannot find those posts. I believe Eric had said something to the effect that they were designed super thick and could be turned somewhat smaller than spec. Any info welcome. thanks








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NMI 120-130

posted by  james_a_sousa on  Mon Oct 29 09:53 CST 2018
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last visit: Thu Oct 23 18:51 CST 2014
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If the rotors are out of spec, I suggest that you change the pads early, like 1/3 worn to avoid over heating the rotors and to avoid problems with the seals and pistons.







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brake rotor minimum thickness 120-130

posted by  planetman on  Mon Oct 29 09:47 CST 2018
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last visit: Fri Oct 24 09:29 CST 2014
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Volvo spec is .455" minimum thickness for 122/1800 front brake rotors, but I don't scrap them until they are below .440".





--
Eric
Hi Performance Automotive Service (formerly OVO or Old Volvos Only)
Torrance, CA 90502
hiperformanceautoservice.com or oldvolvosonly.com








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brake rotor minimum thickness 120-130

posted by  Danny on  Mon Oct 29 10:01 CST 2018
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last visit: Mon Oct 6 22:01 CST 2014
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thanks, Eric. That's what I was looking for.







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