Brakes(?) squeaking when hot but not applied - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

COBlue · 09-10-2019, 04:51 PM

2017 PP with 8,000 miles on current stock pads and rotors. Fourth time at the track on current brakes, sessions 3&4 I noticed a speed dependent high pitched intermittent squeaking after a few laps returning to the paddock when the brakes were NOT being applied. (Hadn't noticed on previous track days.) Quieter and a little higher pitched than normal brake application squeaking. Rotors ~280-300F. Noise is gone after cooling and never present for DD.
Possible slight brake drag/rubbing from heat expansion? Local shop says pretty normal and no issue as long as temps even and not present for DD. Anyone else experience this?

jflogerzi · 12-08-2019, 05:11 PM

Rotors wraped?

Sent from my GM1915 using Tapatalk

soundman98 · 12-08-2019, 05:51 PM

Quote:

Originally Posted by jflogerzi

Rotors wraped?

Sent from my GM1915 using Tapatalk

Rotors don't warp.

Others have noted the pp brembos are noisy. Part of the joys of brembos

COBlue · 12-08-2019, 06:51 PM

Quote:

Originally Posted by soundman98

Rotors don't warp.

Others have noted the pp brembos are noisy. Part of the joys of brembos

They definitely squeak at the right (wrong) brake pressure, but this is different from that. Quieter, higher pitch and only with no brake pressure.

Season is over out here, will see if it's back in the Spring. Just odd I didn't hear it last season but I did this year (both years had basically new brakes: first season new car/brakes, second season new brakes because Subaru replace them due to pulsing).

TommyW · 12-09-2019, 10:36 AM

Get better pads and fluid before next track day

COBlue · 12-09-2019, 10:39 AM

Quote:

Originally Posted by TommyW

Get better pads and fluid before next track day

I put Motul RBF 600 in there before the first track, but yes, have been considering better pads.

Suggestions? (It's also my DD)

BRZ383 · 12-09-2019, 11:07 AM

I just installed Porterfiled R4S pads front and rear on my PP BRZ my initial impressions are good, they have a good bite when cold and warm. they are advertised to not squeak and have little dust.

TommyW · 12-09-2019, 10:06 PM

Quote:

Originally Posted by COBlue

I put Motul RBF 600 in there before the first track, but yes, have been considering better pads.

Suggestions? (It's also my DD)

there are a lot of good ones I’m using powerstop Track Day pads and great on the street and great on the track for HPDE 20-30 minute stints. Quiet also. I’ve seen a lot of combo pads that were very loud. I have 12000 miles on em and. Several track days. Replacing rotors tomorrow and will see how the pads look. I bought a new set in case they’re getting down there

09-10-2019, 04:51 PM	#1
COBlue Member Join Date: Jan 2018 Drives: 2017 Subaru BRZ Limited PP Location: Colorado Posts: 75 Thanks: 32 Thanked 25 Times in 21 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Brakes(?) squeaking when hot but not applied 2017 PP with 8,000 miles on current stock pads and rotors. Fourth time at the track on current brakes, sessions 3&4 I noticed a speed dependent high pitched intermittent squeaking after a few laps returning to the paddock when the brakes were NOT being applied. (Hadn't noticed on previous track days.) Quieter and a little higher pitched than normal brake application squeaking. Rotors ~280-300F. Noise is gone after cooling and never present for DD. Possible slight brake drag/rubbing from heat expansion? Local shop says pretty normal and no issue as long as temps even and not present for DD. Anyone else experience this?

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12-09-2019, 10:36 AM	#5
TommyW Senior Member Join Date: Feb 2017 Drives: '13 Whiteout Location: San Clemente Posts: 1,491 Thanks: 496 Thanked 1,242 Times in 673 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Get better pads and fluid before next track day

12-09-2019, 11:07 AM	#7
BRZ383 Member Join Date: Feb 2018 Drives: 2018 BRZTs, Location: La Quinta Posts: 13 Thanks: 0 Thanked 6 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I just installed Porterfiled R4S pads front and rear on my PP BRZ my initial impressions are good, they have a good bite when cold and warm. they are advertised to not squeak and have little dust.

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