Scarred front brake discs - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

HRTROB · 04-12-2013, 01:04 AM

I just noticed that both my front discs have become scarred/scored. It's pretty bad. The rear discs are fine. Any idea what caused it? I tracked the car the other day, it was the second time for the car. Didn't have any problems after the first track day. I never really abused the car at the track, I would pit in every 4-5 laps to allow the engine and brakes to cool, and I never used the handbrake after pitting in.

Here's how it looks like currently

Here's how the disc looked like a few weeks ago

celica73 · 04-12-2013, 11:25 AM

looks normal to me. Do any of those marks catch a fingernail?

Stock pads or other?

King Tut · 04-12-2013, 12:08 PM

Normal.

CSG Mike · 04-12-2013, 12:16 PM

Fairly normal, but looks like the pad may be overheating. Even a single lap will overheat stock pads with a decent driver. Time to get proper pads for tracking

JRitt · 04-12-2013, 12:59 PM

Quote:

Originally Posted by CSG Mike

Fairly normal, but looks like the pad may be overheating. Even a single lap will overheat stock pads with a decent driver. Time to get proper pads for tracking

Agreed...they look fine to me. However, stock pads on the track are a big no-no! Check out this article I wrote on how to choose the best street and track brake pads.

HRTROB · 04-12-2013, 03:53 PM

Yes these are the stock pads. I can feel those marks when running my finger across the surface.

I'm just curious because when I asked the other 86 guys who also went to the track, they said their front discs look normal with no scarring...

DanoFA20 · 04-12-2013, 03:55 PM

that means youre doing a good job at braking LAWL new pads will cure that issue like stated above

shu5892001 · 04-12-2013, 03:57 PM

nice rims =p

HRTROB · 04-12-2013, 04:34 PM

So consistent hard braking can scar/score the rotor? I was thinking that maybe a few stones got stuck in there when I spun out and went off track trying to drift Lol

shu5892001 · 04-12-2013, 04:47 PM

Quote:

Originally Posted by HRTROB

So consistent hard braking can scar/score the rotor? I was thinking that maybe a few stones got stuck in there when I spun out and went off track trying to drift Lol

That Starbucks cup looks extremely dangerous while drifting lol

ollepellijeff · 05-21-2013, 01:58 PM

I had the same issue with stock brake pads on my first track day. The groves most definitely would catch a finger nail. I'll try to get new pads and/or brake kits for the next track day.http://pellijeff.com/gfx/brakes.jpg

frslee · 05-21-2013, 02:07 PM

You need to work out son. I see that belly covering seat belt.

SeeSharkySwim · 05-21-2013, 02:13 PM

appears normal to me, could possibly come off with enough normal street driving depending on your brake compound.

ATL BRZ · 05-21-2013, 02:32 PM

Two track days on my OEM rotors with aftermarket pads (StopTechs first, now running PMU HC+800's) and I can't catch a fingernail on anything. In fact they still look brand new. I'd never even consider tracking mine with OEM pads, lol.

04-12-2013, 01:04 AM	#1
HRTROB Senior Member Join Date: Dec 2012 Drives: Toyota 86 Location: Manila, Philippines Posts: 458 Thanks: 144 Thanked 271 Times in 140 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Scarred front brake discs I just noticed that both my front discs have become scarred/scored. It's pretty bad. The rear discs are fine. Any idea what caused it? I tracked the car the other day, it was the second time for the car. Didn't have any problems after the first track day. I never really abused the car at the track, I would pit in every 4-5 laps to allow the engine and brakes to cool, and I never used the handbrake after pitting in. Here's how it looks like currently Here's how the disc looked like a few weeks ago

04-12-2013, 12:08 PM	#3
King Tut NASA SpecE30 Racer Join Date: May 2012 Drives: 2006 Honda S2000 Location: Gulf Breeze, FL Posts: 7,279 Thanks: 607 Thanked 5,759 Times in 3,055 Posts Mentioned: 274 Post(s) Tagged: 10 Thread(s)	Normal. __________________ - King Tut Street/Track Car: 2006 Honda S2000 TT3 \|\| Race Car: 1987 BMW 325is SpecE30 \|\| Tow Vehicle: 2014 RAM 1500 EcoDiesel Sold Cars: 2012 BMW M3 \|\| 2013 Subaru BRZ \|\| 2012 Porsche Cayman R \|\| 2009 Chevrolet Z06 \|\| 2009 BMW M3 \|\| 2004 BMW M3 \|\| 2004 Nissan 350Z

04-12-2013, 04:34 PM	#9
HRTROB Senior Member Join Date: Dec 2012 Drives: Toyota 86 Location: Manila, Philippines Posts: 458 Thanks: 144 Thanked 271 Times in 140 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	So consistent hard braking can scar/score the rotor? I was thinking that maybe a few stones got stuck in there when I spun out and went off track trying to drift Lol Last edited by HRTROB; 07-10-2017 at 06:38 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
FS: NIB Hawk HP+ Front Brake Pads	djfuller	Brakes, Suspension, Chassis	4	02-22-2013 12:59 PM
Baer front and rear brake kits	JoeBoxer	Suspension \| Chassis \| Brakes -- Sponsored by 949 Racing	23	12-04-2012 07:47 PM
Hawk HP Plus front brake pads on the track	mtsound	Tracking / Autocross / HPDE / Drifting	30	11-15-2012 03:24 PM
Gt to gts brake discs	acro	AUSTRALIA	2	11-09-2012 06:04 PM
Will the CD player play MP3 discs?	Geezer	Electronics \| Audio \| NAV \| Infotainment	2	08-04-2012 09:37 AM

04-12-2013, 11:25 AM	#2
celica73 Senior Member Join Date: Jun 2012 Drives: '13 BRZ / '11 Outback / '06 Tundra Location: Durham NC Posts: 510 Thanks: 6 Thanked 155 Times in 104 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	looks normal to me. Do any of those marks catch a fingernail? Stock pads or other?

04-12-2013, 12:16 PM	#4
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,564 Thanks: 8,942 Thanked 14,213 Times in 6,856 Posts Mentioned: 970 Post(s) Tagged: 14 Thread(s)	Fairly normal, but looks like the pad may be overheating. Even a single lap will overheat stock pads with a decent driver. Time to get proper pads for tracking

04-12-2013, 03:53 PM	#6
HRTROB Senior Member Join Date: Dec 2012 Drives: Toyota 86 Location: Manila, Philippines Posts: 458 Thanks: 144 Thanked 271 Times in 140 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Yes these are the stock pads. I can feel those marks when running my finger across the surface. I'm just curious because when I asked the other 86 guys who also went to the track, they said their front discs look normal with no scarring...

04-12-2013, 03:57 PM	#8
shu5892001 Ontario's FT86 Join Date: Aug 2012 Drives: 2016 Lexus GS-F Location: Toronto Posts: 685 Thanks: 261 Thanked 165 Times in 111 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	nice rims =p

05-21-2013, 02:07 PM	#12
frslee Just drive it Join Date: Mar 2013 Drives: 13' FR-S Location: Maryland Posts: 1,122 Thanks: 97 Thanked 321 Times in 218 Posts Mentioned: 10 Post(s) Tagged: 3 Thread(s)	You need to work out son. I see that belly covering seat belt.

05-21-2013, 02:13 PM	#13
SeeSharkySwim Member Join Date: May 2013 Drives: Scion FRS Location: Bay Area Posts: 20 Thanks: 0 Thanked 2 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	appears normal to me, could possibly come off with enough normal street driving depending on your brake compound.

05-21-2013, 02:32 PM	#14
ATL BRZ TEQSPORT Brand Manager Join Date: Jun 2012 Drives: '24 GR86 + '16 FR-S Location: Atlanta Posts: 3,666 Thanks: 3,725 Thanked 4,137 Times in 1,707 Posts Mentioned: 90 Post(s) Tagged: 6 Thread(s)	Two track days on my OEM rotors with aftermarket pads (StopTechs first, now running PMU HC+800's) and I can't catch a fingernail on anything. In fact they still look brand new. I'd never even consider tracking mine with OEM pads, lol.

User Name		Remember Me?
Password