Need new rotors - advice on correct parts - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

stayclam · 05-22-2019, 09:50 AM

Hello,

It's about time to replace the rotors & pads in my '13 FR-S w/ 65K miles. I don't track my car, but do some spirited street driving.

I decided to go w/ Akebono ProAct pads (ACT1539 & ACT1124). For the rotors, I've browsed many sites (including TireRack, CarID, AutoAnything) and am left confused on the correct size. Some sites show 292 mm discs while others show 277 mm discs (or both).

I'm considering Centric Plain rotors, but can someone confirm the correct part numbers?

Front: 120.47021
Rear: 120.47031 or 120.47029?

Thanks.

DarkPira7e · 05-22-2019, 10:31 AM

In different countries, different brake sizes were offered.

https://www.ft86club.com/forums/showthread.php?t=123804

This may shed some light on it, there are a few threads on the subject. I'd purchase the rotors from an aftermarket parts store that knows its market and won't list the wrong sizes. Counterspace Garage, FT86Speedfactory, 86speed, etc. They will offer the correct U.S spec sizes

Racecomp Engineering · 05-22-2019, 11:14 AM

We generally use the correct size Centric premium rotors on our street cars. They're not listed on our website, but let me know if you want a set.

- Andrew

jamal · 05-22-2019, 11:33 AM

As far as I know, none of these cars in the US/north america came with the small brakes.

So, yeah, 47031 rear.

The rear pads are also different part numbers between the two, but I think they will still interchange.

EndlessAzure · 05-22-2019, 11:50 AM

Quote:

Originally Posted by stayclam

Hello,

It's about time to replace the rotors & pads in my '13 FR-S w/ 65K miles. I don't track my car, but do some spirited street driving.

I decided to go w/ Akebono ProAct pads (ACT1539 & ACT1124). For the rotors, I've browsed many sites (including TireRack, CarID, AutoAnything) and am left confused on the correct size. Some sites show 292 mm discs while others show 277 mm discs (or both).

I'm considering Centric Plain rotors, but can someone confirm the correct part numbers?

Front: 120.47021
Rear: 120.47031 or 120.47029?

Thanks.

USDM Standard Caliper (Vented front and rear)

Front: 120.47021
Rear: 120.47031

I bought these myself some time ago from Rallisport Direct

--

Some European/Japanese market cars came with a solid rear rotor (unvented).

stayclam · 05-22-2019, 12:54 PM

Thank you, gentlemen! I'm good to go.

05-22-2019, 09:50 AM	#1
stayclam Junior Member Join Date: Feb 2012 Drives: Acura Location: USA Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Need new rotors - advice on correct parts Hello, It's about time to replace the rotors & pads in my '13 FR-S w/ 65K miles. I don't track my car, but do some spirited street driving. I decided to go w/ Akebono ProAct pads (ACT1539 & ACT1124). For the rotors, I've browsed many sites (including TireRack, CarID, AutoAnything) and am left confused on the correct size. Some sites show 292 mm discs while others show 277 mm discs (or both). I'm considering Centric Plain rotors, but can someone confirm the correct part numbers? Front: 120.47021 Rear: 120.47031 or 120.47029? Thanks.

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05-22-2019, 10:31 AM	#2
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 3,933 Thanks: 3,200 Thanked 4,095 Times in 2,045 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	In different countries, different brake sizes were offered. https://www.ft86club.com/forums/showthread.php?t=123804 This may shed some light on it, there are a few threads on the subject. I'd purchase the rotors from an aftermarket parts store that knows its market and won't list the wrong sizes. Counterspace Garage, FT86Speedfactory, 86speed, etc. They will offer the correct U.S spec sizes

05-22-2019, 11:14 AM	#3
Racecomp Engineering Join Date: Nov 2011 Drives: 2016 BRZ, 2012 Paris Di2 & 2018 STI Location: Severn, MD Posts: 5,406 Thanks: 3,419 Thanked 7,241 Times in 2,962 Posts Mentioned: 303 Post(s) Tagged: 9 Thread(s)	We generally use the correct size Centric premium rotors on our street cars. They're not listed on our website, but let me know if you want a set. - Andrew

05-22-2019, 11:33 AM	#4
jamal Senior Member Join Date: Nov 2011 Drives: Legacy GT Location: compton Posts: 534 Thanks: 9 Thanked 365 Times in 204 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	As far as I know, none of these cars in the US/north america came with the small brakes. So, yeah, 47031 rear. The rear pads are also different part numbers between the two, but I think they will still interchange.

05-22-2019, 12:54 PM	#6
stayclam Junior Member Join Date: Feb 2012 Drives: Acura Location: USA Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Thank you, gentlemen! I'm good to go.

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