Grinding noise ? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Geex · 09-10-2019, 03:57 PM

Hey all,

While i'm driving I can hear almost an inconsistent grinding. I jacked up the front and spun the driver side wheel and recorded a clip.

https://drive.google.com/file/d/14Vh...G8Urm00du/view
(You can hear it better with headphones)

Is this normal ? Bad brake pads ? Warped rotor ? Wheel bearing ?

tobin · 09-11-2019, 09:31 PM

Subscribed, I have a similar sound. Have not yet taken the brakes apart to inspect.

ROFL it's Waffle · 09-17-2019, 04:21 PM

I had this problem on my WRX when stones get wedged between the rotor and brake dust shield. Just need to bend it back so there's clearance.

Ultramaroon · 09-17-2019, 07:23 PM

Quote:

Originally Posted by Geex

Hey all,

While i'm driving I can hear almost an inconsistent grinding. I jacked up the front and spun the driver side wheel and recorded a clip.

https://drive.google.com/file/d/14Vh...G8Urm00du/view
(You can hear it better with headphones)

Is this normal ? Bad brake pads ? Warped rotor ? Wheel bearing ?

Normal. Look elsewhere.

Mr.ac · 09-17-2019, 07:48 PM

Normal brake noise.

If it really bothers you take off wheel, take off brake pads and use brake cleaner. . Re lube the guide pins on the calipers.

If all else fails burn car, don't bother trying to fix it. Buy a brand new Honda Civic SI, spend a few more bucks on the lifetime service maintenance.
You'll never have to fuck with the brakes ever again

DarkPira7e · 09-17-2019, 08:19 PM

Sounds like dirt, mud, or a stone in the brake shield as has been said here. Try pressure washing to knock it out. Could also be a small gremlin hiding in the caliper who breathes funny.

norcalpb · 09-18-2019, 09:25 PM

How many miles on the car? Original brakes?

joro2 · 10-31-2019, 06:10 PM

(This thread was the closest I could find to the grinding sound I describe below, any other thoughts as to what could be the issue are appreciated. Thanks.)

I have ~12500 miles on my 2017 BRZ Premium, purchased new 30 month ago. I do mostly suburban driving, few/infrequent highway miles. I'm not particularly hard on the car (e.g. it's never been tracked), but I do "drive it."
Long story short, this afternoon I noticed a new "sound". I've read all the stories of rattles & creaks but this car until today has been totally solid.
This (new as of today) sounds like a "grinding" or rattling noise. It's not the engine or transmission, and I can only hear it loudly when rolling to or from a stop, even in neutral, both with or w/o applying brakes, and at 15MPH<.
It's not coming from the body or the interior - at first I thought maybe I picked something up, a tree branch or twig caught someplace in the wheel area or chassis, but I looked underneath and don't see anything unusual. The rotors and calipers appear free of debris.
The noise appears to be coming form the left rear wheel area. Have a routine service coincidentally scheduled for tomorrow, but already dreading the "the tech checked and didn't hear anything" answer from the dealer/service manager.

Ultramaroon · 10-31-2019, 07:05 PM

Can you get a recording of it? If heard when slow, maybe have someone film you coasting. Just throwing out ideas.

humfrz · 11-01-2019, 12:31 AM

It may be a wheel bearing going bad.

humfrz

joro2 · 11-01-2019, 01:52 PM

Quote:

Originally Posted by joro2

sounds like a "grinding" or rattling noise.

Just got a call back from the local dealer...

Good News: "We pulled a piece of metal wire out from under your chassis that was rubbing against the wheel." Problem (hopefully) solved.

Bad News: $120 (!) for an oil/oil filter change and tire rotation - my first paid after the original 2 year complimentary service, not having had an out of pocket DEALER oil change in YEARS shocked by the cost <old guy shakes fist at inflation>.

soundman98 · 11-01-2019, 10:11 PM

that's what you get for going to a dealership...

JD001 · 11-02-2019, 06:04 AM

Sounds normal to me. I get this sort of thing as I don't drive my car much, surface rust on the face of the disks rubbing against the pads.

tobin · 04-09-2020, 07:36 PM

(Copied Geex's video to YouTube for easier viewing)

I finally took my caliper off and inspected my noisy brake which was the passenger front. The pads looked totally healthy at 45k. When the rotor spun past the pads at a certain spot, they made this noise. Visually everything looked fine, but with my hand I could feed that the spot on the rotor which was causing the noise had a different texture to it than the rest of the rotor face. It was almost a rough spot...pad deposit I'm assuming?

So I'm guessing rotor replacement (or resurfacing) is the solution.

09-10-2019, 03:57 PM	#1
Geex Member Join Date: Jun 2018 Drives: FR-S Location: Florida Posts: 22 Thanks: 4 Thanked 5 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Grinding noise ? Hey all, While i'm driving I can hear almost an inconsistent grinding. I jacked up the front and spun the driver side wheel and recorded a clip. https://drive.google.com/file/d/14Vh...G8Urm00du/view (You can hear it better with headphones) Is this normal ? Bad brake pads ? Warped rotor ? Wheel bearing ?

09-17-2019, 07:48 PM	#5
Mr.ac [insert cool phrase here] Join Date: Aug 2015 Drives: BRZ Premium Location: Central Coast CA Posts: 2,369 Thanks: 709 Thanked 1,558 Times in 930 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	Normal brake noise. If it really bothers you take off wheel, take off brake pads and use brake cleaner. . Re lube the guide pins on the calipers. If all else fails burn car, don't bother trying to fix it. Buy a brand new Honda Civic SI, spend a few more bucks on the lifetime service maintenance. You'll never have to fuck with the brakes ever again __________________ New daily driver - Subaru BRZ Premium Weekend fun/track car - '91 MR2 Turbo Gen3 Old daily driver - '88 MR2 Supercharged

10-31-2019, 07:05 PM	#9
Ultramaroon 義理チョコ Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,867 Thanks: 52,128 Thanked 36,519 Times in 18,920 Posts Mentioned: 1106 Post(s) Tagged: 9 Thread(s)	Can you get a recording of it? If heard when slow, maybe have someone film you coasting. Just throwing out ideas. __________________ service manuals

11-01-2019, 10:11 PM	#12
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,673 Times in 6,781 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	that's what you get for going to a dealership... __________________ "The time you enjoy wasting is not wasted time"

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09-11-2019, 09:31 PM	#2
tobin Senior Member Join Date: Jun 2013 Drives: '13 BRZ Location: CT Posts: 485 Thanks: 314 Thanked 330 Times in 155 Posts Mentioned: 6 Post(s) Tagged: 1 Thread(s)	Subscribed, I have a similar sound. Have not yet taken the brakes apart to inspect.

09-17-2019, 04:21 PM	#3
ROFL it's Waffle The guy w/o an FRS or BRZ Join Date: Sep 2019 Drives: '23 GR86 Premium 6MT Halo White Location: Planet Erf Posts: 446 Thanks: 276 Thanked 399 Times in 215 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I had this problem on my WRX when stones get wedged between the rotor and brake dust shield. Just need to bend it back so there's clearance.

09-17-2019, 08:19 PM	#6
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 3,934 Thanks: 3,200 Thanked 4,095 Times in 2,045 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	Sounds like dirt, mud, or a stone in the brake shield as has been said here. Try pressure washing to knock it out. Could also be a small gremlin hiding in the caliper who breathes funny.

09-18-2019, 09:25 PM	#7
norcalpb Senior Member Join Date: Oct 2013 Drives: 2013 BRZ, 2023 Model 3 Location: SF Bay Area Posts: 2,296 Thanks: 1,212 Thanked 863 Times in 570 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	How many miles on the car? Original brakes?

10-31-2019, 06:10 PM	#8
joro2 Senior Member Join Date: Jul 2016 Drives: 2017 BRZ Premium MT (DGM) Location: Hollywood FL Posts: 123 Thanks: 262 Thanked 99 Times in 53 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	(This thread was the closest I could find to the grinding sound I describe below, any other thoughts as to what could be the issue are appreciated. Thanks.) I have ~12500 miles on my 2017 BRZ Premium, purchased new 30 month ago. I do mostly suburban driving, few/infrequent highway miles. I'm not particularly hard on the car (e.g. it's never been tracked), but I do "drive it." Long story short, this afternoon I noticed a new "sound". I've read all the stories of rattles & creaks but this car until today has been totally solid. This (new as of today) sounds like a "grinding" or rattling noise. It's not the engine or transmission, and I can only hear it loudly when rolling to or from a stop, even in neutral, both with or w/o applying brakes, and at 15MPH<. It's not coming from the body or the interior - at first I thought maybe I picked something up, a tree branch or twig caught someplace in the wheel area or chassis, but I looked underneath and don't see anything unusual. The rotors and calipers appear free of debris. The noise appears to be coming form the left rear wheel area. Have a routine service coincidentally scheduled for tomorrow, but already dreading the "the tech checked and didn't hear anything" answer from the dealer/service manager.

11-01-2019, 12:31 AM	#10
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 29,868 Thanks: 28,790 Thanked 31,816 Times in 16,425 Posts Mentioned: 708 Post(s) Tagged: 2 Thread(s)	It may be a wheel bearing going bad. humfrz

11-02-2019, 06:04 AM	#13
JD001 Senior Member Join Date: Apr 2015 Drives: Subaru BRZ Location: UK Posts: 6,028 Thanks: 7,652 Thanked 6,187 Times in 3,474 Posts Mentioned: 25 Post(s) Tagged: 2 Thread(s)	Sounds normal to me. I get this sort of thing as I don't drive my car much, surface rust on the face of the disks rubbing against the pads.

04-09-2020, 07:36 PM	#14
tobin Senior Member Join Date: Jun 2013 Drives: '13 BRZ Location: CT Posts: 485 Thanks: 314 Thanked 330 Times in 155 Posts Mentioned: 6 Post(s) Tagged: 1 Thread(s)	(Copied Geex's video to YouTube for easier viewing) I finally took my caliper off and inspected my noisy brake which was the passenger front. The pads looked totally healthy at 45k. When the rotor spun past the pads at a certain spot, they made this noise. Visually everything looked fine, but with my hand I could feed that the spot on the rotor which was causing the noise had a different texture to it than the rest of the rotor face. It was almost a rough spot...pad deposit I'm assuming? So I'm guessing rotor replacement (or resurfacing) is the solution.

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