: STS-V brembo front set up swap

11-15-12, 02:30 PM
So as most of you know the V series brembo calipers bolt right on to our cars the issue is that the rotors on the V are a 6 lug set up while the non v is a V

Also as most know there is not a simple way to convert to the 6 lug set up cheaply

I had a custom shop machine me some rotors and now the time as come they are toast and Im not about to spend another 500 on custom rotors.

I think I have found a solution for a rotor WHICH will bolt right on and with a spacer work on all 05-07 1SG cars, 08+ use a different wheel with less spacing so I do not think those wheels will work.

I have ordered a set of rotors for thiis car and from there will update if it works. Dont want to get anyone too excited but Im 95% positive this will be a bolt on solution for anyone interested.

11-15-12, 03:13 PM
cool, on the back of the 18" rim used in 08 it says offset is +51mm not sure if that is the clearance you are talking about.

11-15-12, 03:49 PM
Those won't even come close then.

05-07 are 42 mm offset an will only clear with small spacer due to the spokes.


V series have 42mm offset.

11-19-12, 05:41 PM
Got the rotors today

they fit PERFECTLY!

I have an old hub assembly I kept for this very reason along with my old OE set of rotors

now just to wait to get my car back from the dealer to bolt everything up

11-19-12, 10:00 PM
Would love to hear the result. Keep us posted!

11-20-12, 04:31 PM
so did you get a rotor made? get some pictures to this thread

11-20-12, 05:41 PM
Originally I did. I now found a rotor from any part store which should work. Love to post pics but my cars still at the dealer!

11-22-12, 10:03 AM
Anyway you could post some more details about this? Where did you find/buy your brembo calipers, what rotors did you get? Also I have an '09... might have to do some more research.

11-22-12, 04:22 PM
Let's see some facts or it's just fiction.

Anybody can say anything.

11-22-12, 04:52 PM
Those won't even come close then.

05-07 are 42 mm offset an will only clear with small spacer due to the spokes.


V series have 42mm offset.

Wouldn't the 51mm offset indicate that it has more clearance than the 42mm offset? I'm no rim offset expert so I ask.

11-22-12, 07:46 PM
Want a picture of the CTS loaner? Mines in the shop still haha.


Trying to find out is CTS brembos are the same as STS to do a full parts list needed for conversion. Relax guys I will share once I'm sure everything is complete.

11-27-12, 09:54 PM

11-29-12, 08:18 PM
jeeze your car must be getting a major overhaul.... you ever see what pimp my ride can do in 7 days lol joking

11-29-12, 09:00 PM

Yea I just got it back yesterday they had to special order the rad (took time due to holiday) as well as all four cam actuators 4 brand new dws contis and inspection/emissions.

Anywho dove into it tonight and it looks like it wont work. The "sourced" rotor is MUCH thinner in the hub, while everything on the brake side fits and mounts perfectly the CALIPER will not clear the wheel due to this difference and I will need a 1 inch spacer to clear now.

Since our wheels are HUB centric using a simple spacer was OK with the custom made one as it still maintained enough to still provide some hub on rim contact, this new set up will not. I must find someone to produce a 1 inch wheel spacer to that is HUB centric.

Thus far this seems like the option


I have emailed the seller to ensure they will work on a STS hub using a stock wheel before purchasing.

Will continue to update

12-02-12, 01:54 PM
did the calipers fit behind you stock wheels actually? and okay im verry interested in this if there is anything you need to know let me know and i can look into it do you have the specs for the rotors you need post them or pm me them and i will look into it also

12-02-12, 03:34 PM
Read up. With oe spec rotors it did. The other rotor I'm using has less meat on the hat and thus will not fit without a spacer.

01-21-13, 10:46 PM
How are the brakes these days?

01-22-13, 09:09 AM
Haven't touched it yet. Still need to find a spacer i trust. Only ones I can find are on eBay and I'm not sure I trust them. Search 25 mm hub centric 5x115 spacer and you'll see.

01-22-13, 10:02 PM
where did you find the hat spec did you find any online? i am looking because the 2008 chrysler 300 srt8 has a 5x115 bolt pattern and a 14 inch rotor! just need to find the hat size and to be completley honest with you im pretty sure the regular 300 and out sts share the same brake calipers on some modles but not to sure about that

01-23-13, 02:37 AM
Center hub bore on 300c is far too big and unsafe.

Once I find a quality spacer I trust ill share. I am not going to be responsible for some idiot slapping parts on their car which can get someone killed. Brakes are the last thing you want to play with.

01-24-13, 10:22 PM
I'd be a little overly cautious before I'd use rotors made for another automotive line like Chrysler parts on a GM car. Granted I do have 02 camaro SS dual piston calipers on my 01 monte SS but all that was needed there was tap out the camaro caliper bracket to take the 14mm bolt of the monte instead of the 12mm bolt of the camaro. Anyone know someone who can make them (spacers) custom that doesn't cost an arm?

01-26-13, 07:46 AM
The spacers for the rim are cheap. I don't trust them. Eibach doesn't make a set for our car no company I've herd of does. Only these eBay ones which don't sit well with me.

03-07-13, 10:27 PM
i read you finished the swap lets see man!

03-25-13, 07:34 PM
I wonder if they can make the right spacers for us?


What car is/was that car that you found that had the right rotors or were those unreliably thin?

03-26-13, 12:12 PM
2005 Shelby gt500 mustang.

03-26-13, 12:38 PM
So if the rotors from that car work, what are the chances of there being a hub centric spacer that is made for that car that would work for ours?

For the 08+ we would need a 9mm spacer in addition to the GT500 rotors?

03-26-13, 04:14 PM
The lugs are not the same. They are fine for a rotor not for lugs.

Mustang 5x114.3

Sts 5x115

03-26-13, 07:33 PM
Boo. Why does everyone else use 114.3mm? 115 just seems like it would make more sense.

03-26-13, 08:41 PM
To annoy somebody who calls themselves Luda....




03-26-13, 08:48 PM
Lol. It certainly limits options.

04-06-13, 06:22 PM


04-07-13, 05:50 PM
did the factory flex line bolt right up to the caliper or did u use the one from the V?

04-07-13, 07:01 PM
Just bolted on for mock up. Still need to fix the wheel clearance issue but this was to show the gt-500 rotor works flawless.

08-25-13, 06:57 PM
So I drove through the Cadillac dealer today.

Saw a used 2013 XTS4 Platinum w/ 4,300 miles on it in the back of the building. It had some odd stickers on it from GM that made it look to me like it may have been a GM buyback car / lemon-law return on it.

I was surprised to see that it had brembo brakes on the front w/ 5 lug rims too.
This car might give us some additional options for rotors and calipers for the STS and perhaps wheels too.
Not sure on the fine detailed specs of the entire setup but it certainly caught my eye.

Side note, it had its fuel door ripped off of the car too.
This made me notice that the XTS doesn't have a fuel cap, you just put the nozzle into the hole and a little flap opens up for the gas to flow in.

08-25-13, 08:00 PM
Xts is 5x120. Ats has brembos and 5x115.

Calipers will not work from either of them nor will rotors.

Sts v calipers gt500 rotors and ats wheels = win

Or cts-v replicas from oe wheels.

08-25-13, 08:19 PM
lol you certainly have checked all of the options out already...

09-04-13, 01:42 PM
Looking at the specs for the GT500 Rotors I see their hub reg is 71.00mm while the STS is 70.87mm which means that it is insignificant as manufacturing tolerances can account for that 0.13mm difference which is equivalent to 1/200th of an inch. As far as the rotor hat spacing, does the rotor line up into the middle of the caliper when placed on the hub?

09-04-13, 04:04 PM
Pretty sure I posted a pic that shows it fits just fine

09-04-13, 04:05 PM
I see your pic above and it looked great, I just wanted to make sure there wasn't anything else required before I ordered the rotors

09-04-13, 04:32 PM
I see your pic above and it looked great, I just wanted to make sure there wasn't anything else required before I ordered the rotors

2 washers to space the the caliper and 40mm offset wheels or a good spacer for stocks.

09-04-13, 08:22 PM
1BadCadSTS: What stock brakes did you car have before the swap ? JE-5 ?
AND: Are those 4 piston calipers ?
They don't say Brembos, and are not RED, so it is fooling me, visually.
Thanks :cool2::cool::cool:

09-04-13, 08:27 PM
For the record the v brake calipers are silver with black v logo and are brembo 4 pistons

05-07-14, 03:35 PM
Just a small update... Got spacers... Should be here Friday....


STS JE5 Centric rotor...


ATS J55 Centric rotor...


hummmmm.... makes me wonder if in fact ATS caliper will work as a direct bolt on to our cars with ATS rotors....

Our STS uses a 12MM caliper bolt while the ATS uses a 14MM
http://www.mcmaster.com/#catalog/120/1150/=rv5kcg with PN# 6679K16 should fix that...

ATS Caliper is about 1/4" skinner than the V1 also the rotor is taller meaning it will sit deeper in the wheel, meaning smaller offset wheel can be used perhaps a stock one also ATS Brembos clear 17"s....

Just stirring the pot....

05-07-14, 05:18 PM
Maybe if I didn't just complete a full set of brakes last fall I'd look into doing this...

06-24-14, 11:27 PM
hey man can you please tell me how the cts-v calipers with the mustang gt500 rotors work out did it hold up and what rotors did you use for the rear im trying to get some feed back please and thank you

06-25-14, 01:20 PM
I have yet to actually install them. I finally finished the Heads Up Display retrofit and then bought a Grand Cherokee which has taken a significant amount of my time along with finally finishing up a few things on the Camaro.

I HOPE to install them at some point this month since I have all the parts and invested all the money in it, its just a matter of installing everything. My greatest fear is the spacers will stick my wheels too far out and look stupid but we shall see...

06-25-14, 03:08 PM
So put the spacers on and see how it looks before you do the rest of the work.