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Old 09-07-2017, 03:39 PM   #1
Ishbu0062
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Default Will the 2018 STI brakes work with the 2015-2017 STI

Just being curious if the 2018 STI brakes will work on a 2015-2017 STI and if it will clear the 18 inch wheels.

Tried to research on google but couldn't find anything definitive or even if someone tried test fitting them.

Once again, just being curious.
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Old 09-07-2017, 03:54 PM   #2
mustard tiger
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The 2018 STI brakes will clear the 2015-17 base Enkei 18" rims as in Canada they are still the same base wheels for 2018 STI.
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Old 09-07-2017, 04:22 PM   #3
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Quote:
Originally Posted by mustard tiger View Post
The 2018 STI brakes will clear the 2015-17 base Enkei 18" rims as in Canada they are still the same base wheels for 2018 STI.
Same base wheels as in manufacturer? The 2018 STI has 19 inch wheels and the 2015-2017 STI has 18 inch wheels and the 2018 STI has the 6 pot front brakes so I'm just curious to see since the brakes are bigger will they clear the 18 inch wheels
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Old 09-07-2017, 08:27 PM   #4
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Will they fit 2015-17 WRX which are also 18"?
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Old 09-07-2017, 08:29 PM   #5
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Quote:
Originally Posted by Ishbu0062 View Post
Same base wheels as in manufacturer? The 2018 STI has 19 inch wheels and the 2015-2017 STI has 18 inch wheels and the 2018 STI has the 6 pot front brakes so I'm just curious to see since the brakes are bigger will they clear the 18 inch wheels
In Canada only the upper trim STi got the 19s. So yes, the new brakes will at least clear the OEM 18's.
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Old 09-08-2017, 06:14 AM   #6
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Quote:
Originally Posted by gaugeof12 View Post
In Canada only the upper trim STi got the 19s. So yes, the new brakes will at least clear the OEM 18's.
But is the caliper mount the same?
because the new caliper would have to be used since the 15-17 ones fits a smaller rotor.
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Old 09-08-2017, 09:24 AM   #7
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This thread has a little more info, however I dont think anyone knows for sure yet. If i was betting I would put my money on needing a bracket like the Brembo GT kit to make it work on anything else.

https://forums.nasioc.com/forums/sho....php?t=2849217

Brembo GT kit...

https://www.rallysportdirect.com/par...slotted-rotors
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Old 09-08-2017, 11:20 AM   #8
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Quote:
Originally Posted by gaugeof12 View Post
If i was betting I would put my money on needing a bracket like the Brembo GT kit to make it work on anything else.
If I were betting I would say that an OEM like Subaru could ask nicely and Brembo would design the new 6-pot calipers to bolt onto the existing STI steering knuckle.

Cheaper to have a supplier design a new product around your existing hardware than to adapt something and have to deal with a potential warranty/recall issue down the road.
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Old 09-09-2017, 12:11 PM   #9
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Quote:
Originally Posted by car_freak85 View Post
If I were betting I would say that an OEM like Subaru could ask nicely and Brembo would design the new 6-pot calipers to bolt onto the existing STI steering knuckle.

Cheaper to have a supplier design a new product around your existing hardware than to adapt something and have to deal with a potential warranty/recall issue down the road.
I have to admit you are likely correct. Especially after some additional reading that many think these are the same 6 pots used on special edition STis in Japan since 2008.
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Old 09-10-2017, 02:31 AM   #10
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I asked Ravspec a similar question. I recently picked up some 18X10 +40 CE28SL's for my 15 STI. If I remember correctly, they stated that the new 6 piston caliper was longer but more thin if that helps or makes any sense.

I asked because I was debating on selling my 15 STI to get a 18 STI and wanted to know if my new Volks would clear or not. They said they should clear the new 18 STI brakes.
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Old 09-11-2017, 08:13 AM   #11
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Quote:
Originally Posted by gaugeof12 View Post
This thread has a little more info, however I dont think anyone knows for sure yet. If i was betting I would put my money on needing a bracket like the Brembo GT kit to make it work on anything else.

https://forums.nasioc.com/forums/sho....php?t=2849217

Brembo GT kit...

https://www.rallysportdirect.com/par...slotted-rotors
That actually brought more insight. The video they showed, the guy stated that his set of 18s were able to clear the rotors.

Thanks for the vid
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Old 09-11-2017, 03:23 PM   #12
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I'm about 99.9% sure the calipers have the right tabs to bolt to the uprights without any adapters, and that nothing changed with the upright from 2017.

Wheel clearance, someone would have to try. 18" sti wheels, likely.

Buying the OEM parts would be $texas.
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Old 09-11-2017, 09:28 PM   #13
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Old 09-12-2017, 12:19 PM   #14
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$4k for the front 6 piston caliper/rotor upgrade and $5800 for both front and rear STI brake upgrade. That's some serious money for a big brake kit.
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Old 09-12-2017, 02:05 PM   #15
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Ya, brembos aint cheap. You could prob source the calipers separate and get the rotors and pads for cheaper.
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Old 09-12-2017, 03:01 PM   #16
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Quote:
Originally Posted by grex07 View Post
You could prob source the calipers separate and get the rotors and pads for cheaper.
Actually, most likely not.

The kits usually wind up costing you less, as long as you are using the same quality components.
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Old 09-13-2017, 10:18 AM   #17
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The calipers are $1k each from subaru. Getting pads and rotors for under $2k should be easy.
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Old 09-13-2017, 10:41 AM   #18
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Quote:
Originally Posted by aggarcia View Post
$4k for the front 6 piston caliper/rotor upgrade and $5800 for both front and rear STI brake upgrade. That's some serious money for a big brake kit.
It wouldn't cost a huge amount more to trade in my 2017 WRX and get a 2018 STI.
Fortunately my state has no sales tax so I don't need to worry about that.
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Old 09-13-2017, 10:43 AM   #19
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Quote:
Originally Posted by grex07 View Post
The calipers are $1k each from subaru. Getting pads and rotors for under $2k should be easy.
Probably true.
I wouldn't want the drilled rotors on a street car anyway.
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Old 09-13-2017, 11:23 AM   #20
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Probably true.
I wouldn't want the drilled rotors on a street car anyway.
why?
they look cool as hell
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Old 09-13-2017, 11:34 AM   #21
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Quote:
Originally Posted by grex07 View Post
The calipers are $1k each from subaru. Getting pads and rotors for under $2k should be easy.
I'm surprised the 6-pot calipers are not more than $1000 each. I thought they would be more like $1500 each
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Old 09-13-2017, 01:32 PM   #22
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why?
they look cool as hell
I had them on a 911 Turbo (stock). They warp and crack much more easily than a grooved disk if you use them hard.
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