Help G37x - rattling brake calipers. How can I fix this?
#1
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G37x - rattling brake calipers. How can I fix this?
I've been chasing front end noises since purchasing my 2011 G37x last fall especially a metallic rattling when going over bumps that disappears when I lightly engage the brakes. While rotating my tires this weekend I found both front calipers rattle excessively and sound like the noise I hear – check out the video below.
Questions:
1. Is this common? I don't see any TSBs for it. Has anyone seen it before?
2. How can I fix it?
I don't want to purchase new calipers. New bolts? Possibly parts missing after the latest brake job (before my purchase)? I saw some bolts with silicone inserts online for this issue but I'll be surprised if I'm the only one with this issue.
Thanks in advance!
-Eric
Questions:
1. Is this common? I don't see any TSBs for it. Has anyone seen it before?
2. How can I fix it?
I don't want to purchase new calipers. New bolts? Possibly parts missing after the latest brake job (before my purchase)? I saw some bolts with silicone inserts online for this issue but I'll be surprised if I'm the only one with this issue.
Thanks in advance!
-Eric
#3
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Thread Starter
#4
I would it's cheap insurance since you're taking time to take apart and clean btw they sell spray at lowes home depot part stores that stops and stabilizes the rust so it stops and you can paint over it
#7
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Thread Starter
I'll get hardware, possibly slides, clean everything and use caliper grease to see if this resolves the noise. I can't imagine the calipers are bad, although I wonder if they need rebuilt as my understanding is they should keep slight pressure on the pads at all times and if they aren't could allow a rattle. The caliper rebuild kits are inexpensive ($3/side) but I've never rebuilt a caliper and could run into issues if I mess it up.
My wife saw the video and said "those are rusted - should you just get new ones?" I'd love to but upgrading would be $500 as I would get 4 piston which would require 350mm rotors.
Thanks again for your assistance - any more thoughts on what I should do?
-Eric
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#10
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Fixed it!
Replaced pads, hardware and caliper pin boots yesterday and cleaned and properly lubed everything - sound is gone! Thought I recorded a video at the end but it is unbelievably hot and humid here and I apparently forgot to hit record? Cost me $40 (Rockauto) and about 1.5 hours of time.
This was really bugging me and it’s refreshing to drive the car and not have it rattle over bumps.
Thanks for all the help!
-Eric
Video when starting yesterday morning (noise starts @ 1:12):
This was really bugging me and it’s refreshing to drive the car and not have it rattle over bumps.
Thanks for all the help!
-Eric
Video when starting yesterday morning (noise starts @ 1:12):
The following users liked this post:
slartibartfast (07-02-2018)
#11
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Here's the first video along with several others pieced together - no editing to speak of.
#12
Here's the first video along with several others pieced together - no editing to speak of.
https://youtu.be/DKB35oP_kgA
https://youtu.be/DKB35oP_kgA
#13
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Thread Starter
My plan is to paint the calipers and hubs black and eliminate the rust and I will still do that this summer. I didn’t want to spend the time and money if I was going to need to replace the calipers to eliminate the noise. Now that it’s gone I’ll go back and paint them.
-Eric
#14
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Thread Starter
150 miles of quiet rattle-free driving later - I can confirm the calipers were the root of the noise the entire time.
I would invite anyone chasing front-end noises/rattles to rule out the calipers as typically end links, bushings, etc. are replaced for noise. For a week I had a 2010 G37x with 60k miles (returned due to paint issues) and it made the same noise.
-Eric
I would invite anyone chasing front-end noises/rattles to rule out the calipers as typically end links, bushings, etc. are replaced for noise. For a week I had a 2010 G37x with 60k miles (returned due to paint issues) and it made the same noise.
-Eric
The following 2 users liked this post by llebcire:
Bill8808 (08-05-2022),
slartibartfast (07-13-2018)
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