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Old 11-29-2017, 11:59 AM   #126
uofime
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Quote:
Originally Posted by Jawsofire View Post
Uofime upgraded the rears since. Still doesn't have the feel he's looking for. If you want a good pedal feel, upgrade front and rear. Paddle is solid and very predictable. Also provides a lot of confidence for braking late on track days.
yea, that guy's never happy....

didn't you drive around with front only for a week or two?

You did have those bitey, dusty unknown compound pads in for that though.
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Old 11-29-2017, 03:44 PM   #127
Jawsofire
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Originally Posted by uofime View Post
yea, that guy's never happy....

didn't you drive around with front only for a week or two?

You did have those bitey, dusty unknown compound pads in for that though.
I drove like a week with fronts only. Hard to say anything about how they worked since I had unknown pads in the front at the time. As far as daily driving goes, it wasn't as issue.
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Old 03-01-2018, 10:33 PM   #128
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Originally Posted by 2015Sapper View Post
I have a set of 17x8" et40 Rage R20 winter wheels from discount tire direct that luckily clear the brembos with plenty of room to spare.
Does anyone know if the STI brakes will clear the Fast Samba 17x8.0"+45 wheels? I'll get 18" wheels for summer but stuck with the 17" for now.

I'm not sure if this is of any help how the wheels look inside (not my photos, different mount pattern):
http://www.casc.on.ca/forums/showthread.php?t=29936

Is there anyway I can check if they fit before I get the calipers?

Last edited by xxa; 03-01-2018 at 10:53 PM.
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Old 03-21-2018, 09:38 PM   #129
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Does anyone know if the STI brakes will clear the Fast Samba 17x8.0"+45 wheels?
It turns out that they do.


Had a 10mm spacer, extended studs and open-end lugnuts but luckily did not have to use them.
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Old 04-11-2018, 10:11 PM   #130
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Just read this entire thread and it wasn’t clear... will my 2015 WRX braided brake lines work with the 08+ sti brakes (front and rear)?
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Old 04-11-2018, 10:13 PM   #131
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Just read this entire thread and it wasn’t clear... will my 2015 WRX braided brake lines work with the 08+ sti brakes (front and rear)?
Front yes. Rear no - you need STI lines.
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Old 04-12-2018, 07:46 AM   #132
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Front yes. Rear no - you need STI lines.
Thanks !!!
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Old 05-02-2018, 03:44 PM   #133
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Looking at putting some 2015 STi brembos on my 16 wrx. Seems like it'll just drop in!
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Old 05-04-2018, 01:20 PM   #134
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Looking at putting some 2015 STi brembos on my 16 wrx. Seems like it'll just drop in!
Pretty much. The front calipers will need STi bolts. The WRX has a different thread pitch. You'll also need to trim the rear dust shields. You can also replace them with STi OEM, but that it a PITA to do. Other then that, it's pretty straight forward.
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Old 06-04-2018, 06:36 AM   #135
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Just got done doing this swap with 2016 STI brakes, front and rear on my 2015 WRX. Wow, what a difference! They were straight bolt on. However as previously mentioned in this thread, you’ll need to trim or remove the rear dust shield. You will also need the rear STI brake lines. The only challenge I had was, I didn’t realize that the STI brakes have two bleeder valves. Once I figured that out all was smooth sailing!
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Old 06-12-2018, 12:30 AM   #136
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Originally Posted by scotte30m3 View Post
Just got done doing this swap with 2016 STI brakes, front and rear on my 2015 WRX. Wow, what a difference! They were straight bolt on. However as previously mentioned in this thread, you’ll need to trim or remove the rear dust shield. You will also need the rear STI brake lines. The only challenge I had was, I didn’t realize that the STI brakes have two bleeder valves. Once I figured that out all was smooth sailing!

How much did you get them for?
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Old 12-15-2018, 03:25 PM   #137
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Default Front bias

Has anyone experienced front bias with this swap?

I have 2014 black calipers, DBA T3 4000 slotted rotors and Ferodo DS2500 both front and rear.

I took the car for lapping days quite a few times and brakes feel and stop amazingly well. When pushing hard, fronts can get pretty hot after a few laps and I installed brake ducts which help with the cooling - I keep stability control off, the pulsating brake actuations from it improve lap times but heat up brakes even more, and I imagine can’t be a good thing for the hot rotors.

My problem is that I am changing the front pads 4 times before having to change the rears once. This leads me to believe that the rears are underutilized.

Is there anything I can do to improve the setup? Pads, suspension mods, something else?
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Old 12-15-2018, 07:54 PM   #138
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Quote:
Originally Posted by xxa View Post
Has anyone experienced front bias with this swap?

I have 2014 black calipers, DBA T3 4000 slotted rotors and Ferodo DS2500 both front and rear.

I took the car for lapping days quite a few times and brakes feel and stop amazingly well. When pushing hard, fronts can get pretty hot after a few laps and I installed brake ducts which help with the cooling - I keep stability control off, the pulsating brake actuations from it improve lap times but heat up brakes even more, and I imagine can’t be a good thing for the hot rotors.

My problem is that I am changing the front pads 4 times before having to change the rears once. This leads me to believe that the rears are underutilized.

Is there anything I can do to improve the setup? Pads, suspension mods, something else?
For one thing run a more track oriented pad. These ds2500s are likely waaaaay over their heat range. Looks at carbotech XP or gloc R 12/10 F/R, hawk dtc 60s or PFC 01.

No matter what you do fronts will always wear way faster. You can’t avoid transferring weight and grip to the front while braking so they’re always going to do more work.
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Old 12-18-2018, 10:16 AM   #139
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Quote:
Originally Posted by xxa View Post
Has anyone experienced front bias with this swap?

I have 2014 black calipers, DBA T3 4000 slotted rotors and Ferodo DS2500 both front and rear.

I took the car for lapping days quite a few times and brakes feel and stop amazingly well. When pushing hard, fronts can get pretty hot after a few laps and I installed brake ducts which help with the cooling - I keep stability control off, the pulsating brake actuations from it improve lap times but heat up brakes even more, and I imagine can’t be a good thing for the hot rotors.

My problem is that I am changing the front pads 4 times before having to change the rears once. This leads me to believe that the rears are underutilized.

Is there anything I can do to improve the setup? Pads, suspension mods, something else?
For track run the same brand pad if you wish not to harm your rotors.. just remember to stay with similar compounds.. many peeps don't realize how important this is. I would suggest running ds3000 for track and 2500 for dd.. that is what I use, and I have no issues at all. I do have BBK with 2 piece rotors, SS lines yet have not needed duckting as no brake fade experienced.. I also use my brakes very little, other than hand brake :-).. good luck
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Old 12-18-2018, 10:27 AM   #140
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Originally Posted by uofime View Post
For one thing run a more track oriented pad.
Quote:
Originally Posted by killadawg View Post
I would suggest running ds3000 for track and 2500 for dd.. that is what I use, and I have no issues at all.
Thanks for the advice, makes sense. After reading more on the Ferodo website, they do say that on heavy cars under heavy braking the DS2500 last less than the track pads. The fact that I put stickier wider tires (RE71r in 265) did not help. I'll give DS3000 or DS1.11 a try in spring.
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Old 12-18-2018, 10:54 AM   #141
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Thanks for the advice, makes sense. After reading more on the Ferodo website, they do say that on heavy cars under heavy braking the DS2500 last less than the track pads. The fact that I put stickier wider tires (RE71r in 265) did not help. I'll give DS3000 or DS1.11 a try in spring.
I'm running the same tires (when summer) now on winter tires ;-)... and when my car was up and running (under major upgrades now) @ track when running meth I was 400+ whp running custom MapDCCD Sti drivetrain and suspension (meaning I'm sticking to the ground better than most WRX's).. this was my setup when running last year and I had Zero brake fade etc..

https://wheelwell.com/killadawg-09-1...016-subaru-wrx

I did upgrade the fluid (which I have changed 2x.. did I mention I might be a little OCD..) best fluid I have found is Castrol SRF racing brake fluid, its prob. better than all the Motuls, stoptech etc.. out there.. it is about 2x the price as well and doesn't have as long of a shelf life, yet it can take some serious abuse!! get SS lines if you don't already, (I also added a Master Cyl. Brace, not sure if it did anything ;-). This is really only if you "really" track the hell out of your car.. if not ignore most of this ;-)
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Old 12-18-2018, 01:23 PM   #142
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been wanting to do this, but i have a question about the parking brakes, i have a 2017 wrx, is there any modifications that need to be made to the parking brakes for them to function with the rear sti rotor?
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Old 12-18-2018, 03:04 PM   #143
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been wanting to do this, but i have a question about the parking brakes, i have a 2017 wrx, is there any modifications that need to be made to the parking brakes for them to function with the rear sti rotor?
Good question... I swapped out full subframes to STI.. so I can't really say? They looked identical (the rear Parking brake shoes and housing).. it was just easier for me as I also swapped the bushings to hard / almost solid mounts. (This was almost 11/2 ago) I suspect the drum and shoes are prob. The same.. but do ask.. I'm in the process of deleting mine and running a hydraulic hand brake that actuates the rear discs and gets rid of the shoe/pads ebrake and lines. Also getting rid of the power assist on these and running dual slave cylinders (one for rear, one for front)..
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Old 12-18-2018, 03:44 PM   #144
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been wanting to do this, but i have a question about the parking brakes, i have a 2017 wrx, is there any modifications that need to be made to the parking brakes for them to function with the rear sti rotor?
They will not work if you have a CVT. Otherwise they should fit fine. You just need to trim the dust shield to fit the larger rotor. Or you switch to STi dust shields, which I do not recommend.
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Old 12-22-2018, 06:15 PM   #145
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Do the stock wrx front caliper bolts work on the sti Brembos? Will the stock brakes lines work for just the front?
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Old 04-19-2019, 01:28 PM   #146
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Would the STi front braided brake lines work or they have to be the wrx braided brake lines?
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Old 04-19-2019, 02:23 PM   #147
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Would the STi front braided brake lines work or they have to be the wrx braided brake lines?
Seriously dude, read. The answer is literally on this page and several time throughout the thread.
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Old 04-19-2019, 04:44 PM   #148
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Seriously dude, read. The answer is literally on this page and several time throughout the thread.
Maybe I missed it but the rears need to be STi lines but ppl are using their braided wrx lines for the front. I wanted to make sure that the front STi braided lines will also fit
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Old 08-04-2019, 09:15 PM   #149
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They will not work if you have a CVT. Otherwise they should fit fine. You just need to trim the dust shield to fit the larger rotor. Or you switch to STi dust shields, which I do not recommend.
That’s not true the page before in this thread shows a member in brazil that did this upgrade on a cvt successfully. So not sure how you are coming to this conclusion.
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Old 08-07-2019, 10:32 PM   #150
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That’s not true the page before in this thread shows a member in brazil that did this upgrade on a cvt successfully. So not sure how you are coming to this conclusion.
Hello.
Here in Brazil the WRX CVT handbrake's is not electronic, so the swap for the STI Brembo 4/2 pots (front and rear) is a breeze. I did it in my car.
And as already said, the rear dust shields need to be replaced with those of the STI or have the ends cut off. And need to use the rear brake lines of the STI.
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