brake grinding noise

gfxv2388 · 02-25-2017, 05:27 PM

Quick brake question. My car now has 7500 miles on it (1SS). Whenever the car has been sitting overnight especially when there was precipitation the day before the bremos will make a harsh grinding sound when the brake are applied.. This will last approx 1 mile or so. Pretty certain this was normal however I just want some reassurance as I did not hear this in the first 5000 miles. Thank you.

greg72982 · 02-25-2017, 05:32 PM

Probably just a light layer of rust forming on the rotor while parked. I get it just after washing the car.

2006Moy · 02-25-2017, 06:14 PM

Bed the brakes and it should stop.

Slem · 02-25-2017, 08:01 PM

Mine also does this after sitting

glebulon · 02-26-2017, 10:07 PM

Quote:

Originally Posted by 2006Moy

Bed the brakes and it should stop.

Its surface rust, has zero to do with bedding the brakes or not. The behavior is normal, after the first few times the car uses the brakes it will smooth back out, the harder you brake the faster it will smooth out.

2006Moy · 02-27-2017, 06:28 AM

Quote:

Originally Posted by glebulon

Its surface rust, has zero to do with bedding the brakes or not. The behavior is normal, after the first few times the car uses the brakes it will smooth back out, the harder you brake the faster it will smooth out.

All my vehicles get bedded brakes when I get them so I don't have pretty shiny silver surfaces that rust like those. If they get rust it's the non contact areas of the pad. Also it means they as rule do not squeak or grind. So yes bed the brakes.my DD sits in all conditions never rusted like those.

glebulon · 02-27-2017, 07:34 AM

Quote:

Originally Posted by 2006Moy

All my vehicles get bedded brakes when I get them so I don't have pretty shiny silver surfaces that rust like those. If they get rust it's the non contact areas of the pad. Also it means they as rule do not squeak or grind. So yes bed the brakes.my DD sits in all conditions never rusted like those.

If the brakes were not bedded in they would squeak, and possibly vibrate under all conditions not just when the car was sitting during high humidity conditions. The fact that you specifically never had surface(hard to believe) rust doesn't mean that somehow a procedure that is done when the brakes are new(bedding them in) translates to the outcome.

gringo · 02-27-2017, 08:53 AM

Quote:

Originally Posted by glebulon

Its surface rust, has zero to do with bedding the brakes or not. The behavior is normal, after the first few times the car uses the brakes it will smooth back out, the harder you brake the faster it will smooth out.

What kind of lug nuts are those? I've never seen ones like that.

glebulon · 02-27-2017, 12:15 PM

Quote:

Originally Posted by gringo

What kind of lug nuts are those? I've never seen ones like that.

VWs have those, those aren't actual lug nuts but plastic caps that cover the lug nuts themselves

https://www.ecstuning.com/b-genuine-...3o9hoCQdfw_wcB

02-25-2017, 05:27 PM	#1
gfxv2388 Drives: 2016 Camaro 1SS Hyper metallic Blue Join Date: Jun 2016 Location: Grand Rapids Posts: 46	brake grinding noise Quick brake question. My car now has 7500 miles on it (1SS). Whenever the car has been sitting overnight especially when there was precipitation the day before the bremos will make a harsh grinding sound when the brake are applied.. This will last approx 1 mile or so. Pretty certain this was normal however I just want some reassurance as I did not hear this in the first 5000 miles. Thank you.

02-25-2017, 05:32 PM	#2
greg72982 Drives: Black 2017 2SS Join Date: Jan 2012 Location: PA Posts: 539	Probably just a light layer of rust forming on the rotor while parked. I get it just after washing the car. __________________ 2017 Black 2SS, M6, NPP, MRC, NAV, and black bowties - delivered 6/23/16

02-25-2017, 06:14 PM	#3
2006Moy Drives: 2016 SS Convertible Hyper Blue Join Date: Apr 2016 Location: Neosho, mo Posts: 254	Bed the brakes and it should stop. __________________ Blacked bow ties, full bigwormgraphix blackout Gm splash guards Mishimoto catch can Black hash marks Curb alert Vitesse controller Jl audio HD 900/5 amp c5 650 components c2 650x coaxials rear fill 2 x 8" W3v3 subwoofers custom ported box Fix 82 module BF TPNS BF Wet Diamond BF Crystal Seal Hydr02 303 Aerospace top protectant

02-25-2017, 08:01 PM	#4
Slem Drives: 2016 Summit White 2SS (Auto) Loaded Join Date: Jul 2016 Location: Ontario Posts: 487 View My Garage	Mine also does this after sitting

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