ST205 Front Brakes

Suspension and other discussion

Re: ST205 Front Brakes

Postby Matty-st185 » Thu Dec 26, 2013 10:45 am

I just ran out quickly to check the lug nuts rotations ..

I counted 13 on it then I looked and noticed theses a
15mm spacer on there between the wheel and hub
If this is a bolt on spacer it explains the 13 rotations of the lug nut

When the rain stops I will remove the wheel to check
If it's bolt on ... I'm guessing it is and that the spacer
Lugs are a lot thinner in diameter than the normal
As they would have to be seated within the 15mm spacer to
Allow a flush mounting of the wheel ?

If my theory is correct and yours this means I would have to remove the spacer and put the wheel on to the hub check it
For the rotations as you said any less than 7turns would mean
No spacer or longer lugs have been added if that's the case


I need to order
st205 lugs ? Or do I because of the spacer ? If it's bolt on
Get a 4mm spacer made up or buy somewhere ?
And something to space the caliper out ? But I'm thinking how
Are these even on the car if this hasn't already been done ?
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Re: ST205 Front Brakes

Postby phattyduck » Thu Dec 26, 2013 5:54 pm

7 rotations is the MINIMUM you want for the lug nuts on the studs. More is better (or at least, not worse).

You really need to get clearance in there for the ball joint to the disk. When it interferes, it can do very bad things to other parts of the suspension (extra pressure on the wheel bearings, wheel studs, etc.) and it is unsafe.

As for the pad contact - that's normal when putting the ST205 calipers on non-ST205 hub carriers - the ST205 has a different mounting location that is farther 'out' from the hub than all the standard McPherson strut cars. The outer diameter of the disk has to be reduced to fit inside the caliper, and the pad contact is more towards the center when it is run this way.

Whether the brake bias and performance is optimal is another question... that depends on what other supporting changes were done with the brakes, and we won't be able to figure that one out over the internet.

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Re: ST205 Front Brakes

Postby Matty-st185 » Thu Dec 26, 2013 8:10 pm

Cool ... Gotta get them back off to have a look and fix what someone else done
I'm almost thinking
Of just trying to find the standard brakes and put them
Back on .... Are the carlos sainz ones any bigger and a direct swap?
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Re: ST205 Front Brakes

Postby CSAlltrac » Fri Dec 27, 2013 2:26 am

The 205 brake swap appears to be a GIANT headache with the presence of a possible catastrophic failure. I for one fail to see the appeal of it given these "cons". Why wouldn't one just go with either an over the counter option like K-sport, or do the Porsche calipers in conjunction with STI rotors. Both of those options have been proven and meet both end of the sprectrum, expensive(K-sports) as well as affordable (Porsche calipers)
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Re: ST205 Front Brakes

Postby athousandleaves » Fri Dec 27, 2013 4:41 am

Some folks with the Porsche setup are also experiencing the same ball joint contact issue... So pony up for KSport or the AP calipers if you're doing the kind of driving that merits this setup.
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Re: ST205 Front Brakes

Postby Spectra1 » Fri Dec 27, 2013 5:21 am

Some folks with the Porsche setup are also experiencing the same ball joint contact issue

Like who? I have that setup and have had no issues.
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Re: ST205 Front Brakes

Postby Matty-st185 » Fri Dec 27, 2013 9:35 am

I just bought the car these 205 calipers were fitted by some moron incorrectly
I just want to have brakes lol

Are the carlos sainz calipers the same as the standard st185?
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Re: ST205 Front Brakes

Postby athousandleaves » Fri Dec 27, 2013 5:50 pm

Spectra1 wrote:
Some folks with the Porsche setup are also experiencing the same ball joint contact issue

Like who? I have that setup and have had no issues.

celi_wabbit & underscore are: viewtopic.php?p=427700#p427700
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Re: ST205 Front Brakes

Postby alltracman78 » Wed Mar 12, 2014 10:03 pm

So I was hopping around the net and I found some info.
Apparently BRZ rotors are bolt on for the 6th gen with 205 calipers.
Which means FRS, and a few others probably fit too.
IMO they're too thin for us stock [24mm?] but if we could find some thicker aftermarket, or larger + caliper bracket? .................
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Re: ST205 Front Brakes

Postby Matty-st185 » Fri Mar 14, 2014 10:12 am

Not sure but I have removed my

St205 callipers
St205 discs
St205 brake pads

They are for sale £150 if anyone is interested
But I'm in Dublin Ireland will post at an extra cost
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Re: ST205 Front Brakes

Postby FC Zach » Thu Feb 19, 2015 8:03 am

I wish I searched for a thread like this before purchasing a set of calipers off eBay. . Prior to purchasing I thought of this project as an easy to moderate weekend mod but after reading through 17 pages of comments I now have a different opinion. Seems as though there is no 'one' way to go about this conversion and that there are many vague options, opinions, and dead builds/kits.

Anyone that has completed this project care to shed some light on what parts were used (like spacers/studs/brake lines) and would you do it any differently? I'd like to mount the caliper directly to my ST185 hub (if possible) without the use of an adapter and would also like to know what rotors were used with little to no modification that are preferably easily sourced here in the states? Wheel fitment shouldn't be a concern of mine as I have 17s with spacers.

From what I've read, the rotor seems to be the biggest gray area, some people want to run a custom hybrid rotor while others are using OE parts. .

Thanks in advance and sorry to wipe the dust off an old topic.
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Re: ST205 Front Brakes

Postby CTechBlueDragon » Thu Feb 19, 2015 2:12 pm

This has been gone over so many times. Take the 205 rotors and have 10mm turned off the outer edge. Mill 2 mm off the caliper ears and put a 5 mm spacer behind the rotor. Wow its like going to the moon. Longer studs probably also, at your discretion.
BTW I have stock brakes for sale if you want them.
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Re: ST205 Front Brakes

Postby FC Zach » Thu Feb 19, 2015 10:51 pm

Rotors? Yes I'd like them, if shipping isn't too bad. Where is the best place to source these rotors new? I checked Rock Auto but none were available.
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Re: ST205 Front Brakes

Postby DonMuscles » Mon Nov 21, 2016 10:00 am

Matty-st185 wrote:Not sure but I have removed my

St205 callipers
St205 discs
St205 brake pads

They are for sale £150 if anyone is interested
But I'm in Dublin Ireland will post at an extra cost



You still got these?

If so please call me on 07765060087 or text me thanks.
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Re:

Postby eddie_gt4 » Sat Feb 11, 2017 3:12 pm

sleeper wrote:16" speedlines does also fitt.. ( but only with about 3mm clearance..)


What exact Speedline model (and specs), could you please clarify?
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