HELP: BBK or "aftermarket caliper" fitment with 17x7 STI Wheels?
 

Does anyone know if there is a Big Brake Kit OR just a good aftermarket caliper (with my stock sized rotors) that is compatible with/ can clear the BRZ STI 17X7" OR the OEM 17x7 wheels on a 14' BRZ?

Long story short, I'd like to upgrade the brakes to a BBK but I don't want to switch out the STI wheels I have. I'd also rather not have to size up to the 18" as I'm happy with the wheel and suspension setup. My pads and rotors are already upgraded to street pads and slotted rotors by Stoptech.

I would even entertain a caliper-only upgrade too.


If anyone has been through this or have any recommendations, it would be really appreciated! Thanks in advance, friends!

@jbsali

Refer to this thread for a listing of wheels that are compatible with/clear the PP BBK Brembos: https://www.ft86club.com/forums/showthread.php?t=135328

• If these "BRZ STI" wheels that you mention were the same ones offered with the BRZ TS, then they should have a good chance of fitting right out of the box

If you have a BBK system in mind, you can often print out a specifically-made template that represents the outline of the brake system. You can take this print-out, cut it on cardboard, and lay it against your wheel to check if the brakes clear the wheel design. The above thread has a link to a PDF template of the PP brakes, for example




With regard to BBK systems that clear the Base OEM 17x7 wheels out of the box, I know of:

1. Project Mu BBK 315mm (FS4M Caliper)
2. AP Racing "Factory" BBK 332mm (CP6628 caliper)

The problem with these two kits (and other specialty kits) is often limited selection of brake pads and rotors. The benefit of the Brembo system that comes on the PP is that the rotor and pads are common across a variety of cars, so selection options are much better.

As op stated he has 17x7 STI wheels which were dealer option available in US iirc. TS (the OG from 13' or 14') came with 17x7,5 wheel which you can get from STI parts catalogue ad the later 18'+ TS came with 18x7,5 wheel. The only caliper upgrade which I can think of that should fit 17x7 STI wheel is WRX 4-pot. Can't speak how much of performance upgrade it really is but it should be easy to source and fit to his existing setup + it shouldn't disrupt current brake bias.

@jbsali


Thanks, that's certainly confusing. There seems to be a few versions with the same face style like you mentioned:

1. The 17x7.0 that came on the Series Blue (unknown if it will fit PP BBK),
2. The 17x7.5 that is the Japanese-market STI catalog wheel (PP BBK fit confirmed)
3. The 18x7.5 that came on BRZ tS (came included on PP BBK equipped cars).

Our AP Racing by Essex Sprint Brake Kit should fit behind the STI wheels (Subaru OEM STI Wheels (2004) 17x7.5 +53). We have it listed in our confirmed fitments. Our system has been proven a thousand times from daily driving to endurance racing. It is inexpensive in the grand scheme of brake kits and brutally effective.


Sprint Kit can be seen here:
https://www.essexparts.com/essex-des...0299brzfrsgt86



There are many reviews of our system here on the forum and on our blog: https://www.essexparts.com/news-blog



Here is the wheel fitment chart so you can double check your current wheels. You should always check your specific wheels prior to pulling the trigger on a brake kit, as we have seen some variance in wheel dimensions.


https://www.essexparts.com/storage/w...l_template.pdf


https://www.essexparts.com/storage/w...example_58.jpg





Here is our list of confirmed wheel fitments:


Confirmed wheels that fit without a spacer:

OEM Performance Pack Wheels

• 949 Racing 6UL 17x8 +40
• Advan GT 18x9.5 +40 (So much clearance! 1.2+in)
• Data R1R 17x8.5 +35
• Enkei NT03+M 17x7.5 +35
• Enkei PF01 17x8 +45
• Enkei Raijin 18x8 +45
• Enkei Raijin 18x8.5 +45
• Enkei RPF1 17x7.5 +48
• Enkei RPF1 17x8 +35
• Enkei RPF1 17x8 +42
• Enkei RPF1 17x8 +45
• Enkei RPF1 18x9.5 +38
• Enkei Fujin 17x7.5 40
• Konig Ultraform 17x8 +40
• Kosei K4R 17x8 36
• Mach V Motorsports "Awesome" wheel 17x9 42
• Mach V “Wicked Awesome” 18x9.5 +42
• OEM Performance Pack Wheels
• OEM Subaru WRX, model years 2011-2014
• OZ Ultraleggera 17x8
• OZ Ultraleggera 17x8 +48
• Prodrive GC010E 17x7.5 +38
• Racing Hart CP035 17x7.5 ET48 (very tight 1mm clearance)
• Rays CE28N 18x7.5 47
• Rays Gram Lights 57DR 17x9+35
• Ray's Gram Lights 57DR 17x9 +38
• Rays Gram Lights 57Xtreme17x9 +40
• Rota Titan 17x8 +40
• Rota Titans confirm 17x9 +42
• Sparco Terra 16x7 +50
• Sparco (designed by OZ) Assetto Gara 17x7.5 48
• SSR GTF01 18x8.5 +44
• SSR GTV02 18x9.5 +40
• SSR GTX01 17x9 +38
• SSR Type C 16x7.5 +35
• Subaru OEM STI Wheels (2004) 17x7.5 53
• Subaru OEM BBS STI Wheels from 2016 Series Hyperblue
• Team Dynamic 1.2 17x7 38
• Team Dynamics Pro Race 1.2 17x8 +38
• TSW Bathurst 17x8 +35
• TWS Forged T66F 17 x 8.0 +42
• TWS Forged T66F 18x8.5 +44
• TSW Nürburgring 17x8 +45
• Volk CE28N 16x7 +33
• Volk CE28N 16x8 +42
• Volk CE28N 17X7.5 +35
• Volk CE28n 17x7.5 +50
• Volk CE28N 17x8.0 +44
• Volk CE28RT 18X9.5 +38
• Volk CE28RT 18X9 +43
• Volk Racing RE30CS2 18x9.5 +40 (About 0.5-0.7in of clearance!)
• Volk Racing TE37RT 17x9.5 +40
• Volk se37k 17x7.5 +48
• Volk se37k 17x8 +35
• Volk Racing TE37 16" x 7 +46
• Volk TE37 17x8 +35
• Volk TE37SL 17x9.5 +45
• Volk Trophy 18x8.5 +42
• Volk Racing ZE40 18x10" +40
• Wedsport sa67 18x9 +36
• Wedsport TC105n 17x9 35
• Wedsport TC105n 17x8 +42
• 18" Work Meister S1R O-disk (O disk is least clearance disk, so A/R/T will fit as well)
• Work Ultimate 18x8.5 +47
• Work Meister S1R 17” with at least an A centre disc
• XXR 17x8.25 +35

The wheels below will fit with a spacer of the specified thickness:

• 2013+ USDM OEM BRZ or FR-S front wheels, 10mm spacer
• BBS RK 17x7 +48, needs 10mm spacer
• Enkei RPF1 17x9 +35, needs 3mm spacer
• Kosei K4R 17x7 +50, needs 5mm spacer
• OEM NZDM Gt86 (by Enkei)16x6.5 +48, needs at least 8mm spacer
• SSR type-c 16x7 +48, needs 5mm spacer
• Volk Racing TE37 18x7.5 +48, needs 5mm spacer
• Volk TE37 17x7.5 +48, needs 3mm spacer
• Watanabe Needs15x6 +35, needs 25mm spacer