How bad is this??? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Jstyle · 09-22-2021, 10:32 AM

So I was cleaning up everything one last time before my next track day on Friday and when I looked really close at the rotors I noticed this. I don’t know why I didn’t see this before when I took the wheels off to check the brakes but now I’m a little concerned.

So…. How bad is this? Can I get away with another track day on these?

abemo · 09-22-2021, 10:35 AM

Nah, nothing to worry about. That's normal heat checks. You're looking out for cracks. Here's a good explanation.

https://www.essexparts.com/news-blog...-my-iron-discs

Sent from my Pixel 5 using Tapatalk

Jstyle · 09-22-2021, 10:44 AM

Quote:

Originally Posted by abemo

Nah, nothing to worry about. That's normal heat checks. You're looking out for cracks. Here's a good explanation.

https://www.essexparts.com/news-blog...-my-iron-discs

Sent from my Pixel 5 using Tapatalk

You just gave me a HUGE sigh of relief. Thank you for that!

I also just realized I threw away my last set of OEM rotors for no reason….

Kelse92 · 09-22-2021, 12:27 PM

Normal heat cracks, don't be concerned until they're large enough to catch you fingernail on. Spare rotors are cheap to carry around as spares once they get more used-up.

ZDan · 09-22-2021, 12:43 PM

FWIW, here's what mine look like after 18 track days. No plans to replace them at the moment, but if anyone sees something they don't like, lemme know!

gcranston · 09-22-2021, 03:16 PM

Mine look the same. But seriously, get some spares from Rock Auto and just keep them with you. Any crack reaching the edge of the rotor is cause for immediate replacement.

series.trackday · 09-22-2021, 03:49 PM

Those are not concerning. Here's an example of a concerning crack:

Jstyle · 09-22-2021, 05:19 PM

So I’ve never bought rotors from Rock Auto. Damn I didn’t know you could get Centric rotors for 30 bux… Seems a bit suspect to me. Maybe I’ll get the daily driver or coated Centric but still it’s only 50… Interesting…

ka-t_240 · 09-22-2021, 05:40 PM

Quote:

Originally Posted by Jstyle

So I’ve never bought rotors from Rock Auto. Damn I didn’t know you could get Centric rotors for 30 bux… Seems a bit suspect to me. Maybe I’ll get the daily driver or coated Centric but still it’s only 50… Interesting…

I buy my centric blanks on Amazon. Even comes with "prime". Easy and cheap.

Jstyle · 09-22-2021, 06:50 PM

Quote:

Originally Posted by ka-t_240

I buy my centric blanks on Amazon. Even comes with "prime". Easy and cheap.

42 bux with Prime… I know where I’m gonna buy this winter! Thanks!

EDIT FOR CLARIFICATION

ZDan · 09-22-2021, 08:59 PM

f Amazon, f Bezos

CSG Mike · 09-22-2021, 09:47 PM

Keep running em.

Support your local small business if it's within your means.

Ultramaroon · 09-22-2021, 11:04 PM

Quote:

Originally Posted by CSG Mike

Keep running em.

Support your local small business if it's within your means.

It's within anyone's means. Just like anyone can return the shopping cart to the corral.
You know that was some weak sauce, admit it.

CSG Mike · 09-23-2021, 02:13 AM

Quote:

Originally Posted by Ultramaroon

It's within anyone's means. Just like anyone can return the shopping cart to the corral.
You know that was some weak sauce, admit it.

I would hope so if they're tracking, but many folks prefer to vote short term with their wallets.

09-22-2021, 10:32 AM	#1
Jstyle Senior Member Join Date: Jan 2021 Drives: 2020 86 Location: North VA Posts: 183 Thanks: 39 Thanked 49 Times in 28 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	How bad is this??? So I was cleaning up everything one last time before my next track day on Friday and when I looked really close at the rotors I noticed this. I don’t know why I didn’t see this before when I took the wheels off to check the brakes but now I’m a little concerned. So…. How bad is this? Can I get away with another track day on these? Attached Images

09-22-2021, 12:27 PM	#4
Kelse92 At the track Join Date: Feb 2021 Drives: '14 FRS - Former e92 M3 Location: Dallas, TX Posts: 193 Thanks: 239 Thanked 210 Times in 100 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Normal heat cracks, don't be concerned until they're large enough to catch you fingernail on. Spare rotors are cheap to carry around as spares once they get more used-up. __________________ #ladydriven Nasa TT4 FRS // JRZ RS Pro // Karcepts Sway Bars // K24 Swap (in Progress) // AP Endurance BBK // Cobalt Friction brake pads // Safeplace Auto

09-22-2021, 12:43 PM	#5
ZDan Senior Member Join Date: May 2011 Drives: '23 BRZ Location: Providence, RI Posts: 4,672 Thanks: 1,439 Thanked 4,011 Times in 2,097 Posts Mentioned: 85 Post(s) Tagged: 0 Thread(s)	FWIW, here's what mine look like after 18 track days. No plans to replace them at the moment, but if anyone sees something they don't like, lemme know! Attached Images

09-22-2021, 10:35 AM	#2
abemo Member Join Date: Aug 2016 Drives: 2017 CWP BRZ Location: Longmont, CO Posts: 20 Thanks: 7 Thanked 12 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Nah, nothing to worry about. That's normal heat checks. You're looking out for cracks. Here's a good explanation. https://www.essexparts.com/news-blog...-my-iron-discs Sent from my Pixel 5 using Tapatalk

09-22-2021, 03:16 PM	#6
gcranston Senior Member Join Date: Nov 2015 Drives: 2015 Subaru BRZ Limited DGM Location: Boston MA Posts: 392 Thanks: 29 Thanked 55 Times in 38 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Mine look the same. But seriously, get some spares from Rock Auto and just keep them with you. Any crack reaching the edge of the rotor is cause for immediate replacement.

09-22-2021, 03:49 PM	#7
series.trackday Member Join Date: Aug 2021 Drives: '17 Subaru BRZ series.Yellow Location: MD Posts: 86 Thanks: 15 Thanked 93 Times in 47 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Those are not concerning. Here's an example of a concerning crack:

09-22-2021, 05:19 PM	#8
Jstyle Senior Member Join Date: Jan 2021 Drives: 2020 86 Location: North VA Posts: 183 Thanks: 39 Thanked 49 Times in 28 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	So I’ve never bought rotors from Rock Auto. Damn I didn’t know you could get Centric rotors for 30 bux… Seems a bit suspect to me. Maybe I’ll get the daily driver or coated Centric but still it’s only 50… Interesting…

09-22-2021, 08:59 PM	#11
ZDan Senior Member Join Date: May 2011 Drives: '23 BRZ Location: Providence, RI Posts: 4,672 Thanks: 1,439 Thanked 4,011 Times in 2,097 Posts Mentioned: 85 Post(s) Tagged: 0 Thread(s)	f Amazon, f Bezos

09-22-2021, 09:47 PM	#12
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,562 Thanks: 8,942 Thanked 14,211 Times in 6,854 Posts Mentioned: 970 Post(s) Tagged: 14 Thread(s)	Keep running em. Support your local small business if it's within your means.

User Name		Remember Me?
Password