follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Speed By Design
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > 2nd Gens: GR86 and BRZ > GR86 General Topics (2nd Gen 2022+ Toyota 86)

GR86 General Topics (2nd Gen 2022+ Toyota 86) General topics for the GR86 second-gen 86


User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-10-2022, 11:47 PM   #1
Edkwok99
Member
 
Join Date: Feb 2022
Drives: GR86
Location: So Cal
Posts: 24
Thanks: 5
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Brake rotor wear after 3 track days

After 3 track day with Hawk DTC 60, the front rotors look like this. The rotor surface is smooth
Should I replace them immediately?
Attached Images
       
Edkwok99 is offline   Reply With Quote
Old 04-11-2022, 02:48 AM   #2
gen3v8
Barred
 
gen3v8's Avatar
 
Join Date: Oct 2020
Drives: My18 wrxsti My19 brzts
Location: Botany Bay
Posts: 1,139
Thanks: 726
Thanked 1,178 Times in 607 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
__________________
Wait until my Flex capacitor hits 88
gen3v8 is offline   Reply With Quote
Old 04-11-2022, 03:39 AM   #3
soundman98
ProCrastinationConsultant
 
soundman98's Avatar
 
Join Date: Sep 2013
Drives: '14 Ranger, '18 Tacoma 4Dr LB
Location: chicago-ish
Posts: 11,326
Thanks: 35,214
Thanked 13,661 Times in 6,778 Posts
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Lol, 'completely broken car', location:Germany

https://www.google.com/amp/s/nomoney...ur-rotors/amp/
__________________
"The time you enjoy wasting is not wasted time"
soundman98 is offline   Reply With Quote
The Following User Says Thank You to soundman98 For This Useful Post:
SuperTom (04-13-2022)
Old 04-11-2022, 06:57 AM   #4
Varelco
Senior Member
 
Join Date: May 2015
Drives: '15 GT86 & '22 GR86
Location: Kent, UK
Posts: 146
Thanks: 37
Thanked 112 Times in 51 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by kosh0r View Post
Did you look at the last 2 pictures? The cracks almost reached the outside.
I cannot believe that you cant feel them. They are almost a millimeter wide.



Yeah Germany, the country with the 1/3 death rate in traffic, compared to USA.

Indeed, you would not be allowed to run a car here with such discs (last 2 pictures).


But hey, its just about braking... Nothing important


Edit: But anyway: I'm a cautious person and would replace the replace the cracked one (i guess, they are the front discs).

And i dont want to argue with people, who may know better.

At the end, its your life you may play with. At least your car...
If you crash and have nothing else to worry about than the car, the insurance will try to find a reason not to pay. Discs with cracks (or exploded discs) look like a good reason to me.


I would not want to check the discs after/before every trip, but its my OPPINION.
The discs have 'crazing', hairline surface cracks caused by excessive heat. Its pretty normal from brakes which are used hard, its usually superficial and is definitely not considered dangerous.

Your hysteria is not welcome, especially as you do not completely understand what it is you are advising against.
Varelco is offline   Reply With Quote
The Following User Says Thank You to Varelco For This Useful Post:
kosh0r (04-11-2022)
Old 04-11-2022, 07:23 AM   #5
kosh0r
Member
 
Join Date: Apr 2021
Drives: -
Location: -
Posts: 12
Thanks: 1
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Ok. Then sorry fot that.
I deleted my posts to avoid further confusion.


Btw. I googled before i posted, i found several warnings, but i'm definivly not as deep into this, than others.
E.g. i found this is considered as "will break under load".
https://www.at-rs.de/files/blog/Scha.../Bild-3-T2.jpg

So whats the difference?
kosh0r is offline   Reply With Quote
Old 04-11-2022, 07:27 AM   #6
kosh0r
Member
 
Join Date: Apr 2021
Drives: -
Location: -
Posts: 12
Thanks: 1
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
ok, i found some good explanation:

https://www.essexparts.com/news-blog...-my-iron-discs
kosh0r is offline   Reply With Quote
Old 04-11-2022, 10:35 AM   #7
Edkwok99
Member
 
Join Date: Feb 2022
Drives: GR86
Location: So Cal
Posts: 24
Thanks: 5
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Thanks for all feedbacks.

Does that mean the pad is too aggressive for the rotor? Or/and the rotor exceeded operating temperature?

If I upgrade to a better performance rotor, will the rotor have heat checking again from track use?
Edkwok99 is offline   Reply With Quote
Old 04-11-2022, 12:28 PM   #8
gen3v8
Barred
 
gen3v8's Avatar
 
Join Date: Oct 2020
Drives: My18 wrxsti My19 brzts
Location: Botany Bay
Posts: 1,139
Thanks: 726
Thanked 1,178 Times in 607 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
1 possibly 2 did the rotors change color or warp? 3 Maybe (checking? I presume you mean the surface cracking/crazing)
what brake fluid, did they fade? Might change my answer to 1 maybe 2 but not 3
__________________
Wait until my Flex capacitor hits 88
gen3v8 is offline   Reply With Quote
Old 04-11-2022, 02:21 PM   #9
Edkwok99
Member
 
Join Date: Feb 2022
Drives: GR86
Location: So Cal
Posts: 24
Thanks: 5
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by gen3v8 View Post
1 possibly 2 did the rotors change color or warp? 3 Maybe (checking? I presume you mean the surface cracking/crazing)
what brake fluid, did they fade? Might change my answer to 1 maybe 2 but not 3
I use Castrol SRF racing brake fluid and Stoptech SS lines. Brake fluid is still light yellow after 3 track days.

I didn’t experience any brake fade / soft pedal feel at the track.
Edkwok99 is offline   Reply With Quote
Old 04-11-2022, 03:21 PM   #10
staples323
Member
 
staples323's Avatar
 
Join Date: Nov 2018
Drives: '22 GR86
Location: Arizona
Posts: 58
Thanks: 12
Thanked 60 Times in 31 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
Are you using any of the nannies, traction/ stability control? They use the brakes to control wheel speed and create a lot of excessive heat on the brake system.
__________________
2022 Toyota GR86 Halo NASA TT5

2015 Subaru BRZ Crystal White Pearl NASA TT5 SOLD
staples323 is offline   Reply With Quote
The Following User Says Thank You to staples323 For This Useful Post:
gen3v8 (04-11-2022)
Old 04-11-2022, 03:49 PM   #11
norcalpb
Senior Member
 
norcalpb's Avatar
 
Join Date: Oct 2013
Drives: 2013 BRZ, 2023 Model 3
Location: SF Bay Area
Posts: 2,289
Thanks: 1,208
Thanked 853 Times in 565 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
You should try cryo treated rotors for your next set. I heard after they sit in -300F freezers they can last up to 3x longer.
norcalpb is offline   Reply With Quote
The Following 2 Users Say Thank You to norcalpb For This Useful Post:
Flarpswitch (04-11-2022), WolfpackS2k (04-13-2022)
Old 04-11-2022, 04:42 PM   #12
Edkwok99
Member
 
Join Date: Feb 2022
Drives: GR86
Location: So Cal
Posts: 24
Thanks: 5
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by staples323 View Post
Are you using any of the nannies, traction/ stability control? They use the brakes to control wheel speed and create a lot of excessive heat on the brake system.
I use Track mode.
It could be from rt660 tires. I go full speed at the track; I really “drive” the car.
Edkwok99 is offline   Reply With Quote
Old 04-11-2022, 04:48 PM   #13
staples323
Member
 
staples323's Avatar
 
Join Date: Nov 2018
Drives: '22 GR86
Location: Arizona
Posts: 58
Thanks: 12
Thanked 60 Times in 31 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by Edkwok99 View Post
I use Track mode.
It could be from rt660 tires. I go full speed at the track; I really “drive” the car.
Track mode still has some but minimal intervention. Long pressing the trac off button turns everything off
__________________
2022 Toyota GR86 Halo NASA TT5

2015 Subaru BRZ Crystal White Pearl NASA TT5 SOLD

Last edited by staples323; 04-11-2022 at 04:48 PM. Reason: spelling
staples323 is offline   Reply With Quote
The Following User Says Thank You to staples323 For This Useful Post:
gen3v8 (04-11-2022)
Old 04-11-2022, 05:19 PM   #14
Edkwok99
Member
 
Join Date: Feb 2022
Drives: GR86
Location: So Cal
Posts: 24
Thanks: 5
Thanked 2 Times in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by staples323 View Post
Track mode still has some but minimal intervention. Long pressing the trac off button turns everything off
Yes. I know how to turn everything off.
But I am not ready yet
Edkwok99 is offline   Reply With Quote
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Brake pads to swap between for DD and Track Days jim985 Suspension | Chassis | Brakes -- Sponsored by 949 Racing 17 12-25-2020 08:12 PM
Brake compound for Track Days fer3d Suspension | Chassis | Brakes -- Sponsored by 949 Racing 13 07-31-2018 08:47 AM
Brake Pads and Fluid For DD/AutoX/Track Days/HPDE ToyoburuBRZ Suspension | Chassis | Brakes -- Sponsored by 949 Racing 29 07-23-2016 03:59 PM
NPA: APR Carbon Fiber Brake Cooling Kit with Ducts - A must for track days 86_Insider Brakes, Suspension, Chassis 1 09-26-2013 01:39 AM
Brake pads for track days why Suspension | Chassis | Brakes -- Sponsored by 949 Racing 2 05-26-2013 06:42 PM


All times are GMT -4. The time now is 05:52 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.