New rear direct fit Brembo rotor from the 2015 SS

[FF_ace]

Subd

[solty]

Very interested. Subd

[Baldo05]

Any updates on this?

[JonRobbinSS]

Just need to wait for GM to start stocking parts for the 2015 SS...

[Greg@PacePerformance]

Only update I currently have is the SS rear Brembo caliper is the same as the Camaro SS rear Brembo caliper.
The rest of the parts are still not shipping to dealers.

[JonRobbinSS]

Only update I currently have is the SS rear Brembo is the same as the Camaro SS rear Brembo.
The rest of the parts are still not shipping to dealers.

Are you referring to the caliper or rotor?

[Greg@PacePerformance]

Caliper
Sorry I'll edit.

[Rylos]

I have a set of brackets and ebrake shoes I've not installed because I'm waiting to see how this rotor solution pans out.

[pir4te]

Mate looked up 92267114 here
New number 92281427 AUD$288.75 retail. US$245.24.

[G8V8]

Does anybody know if the rear hub is the same for the '15 as the '14?
If the caliper is the same as the Camaro SS then one of the following conditions must be met for everything to bolt up and fit:

1) The '15 Chevy SS rear rotor must be smaller in diameter than the Camaro SS rotor, or
2) The '15 hub is different than the '14 to move the caliper outward from the hub.

Here is my confusion:
Camaro SS rear rotors are 365 mm. G8 GT rear rotors are 324 mm. The DBA HSV rear rotors that I had on my G8 fit and allowed the 4-pot rear Brembo calipers to bolt directly to the G8 hub (no bracket req'd, stock e-brake fits) BUT the caliper was a little too far from the hub which meant that the brake pads over hung the rotor by 2-3 mm. We dealt with this by trimming 2-3 mm off of the outermost edge of the pad. Had the rotor been 4-6 mm larger (probably 355 mm) or the caliper mounted 2-3 mm closer to the hub, this would have been a perfect fit.

So, it would seem, IF the '015 hub is the same, dimensionally, as the G8 and '14 Chevy SS rear hub, a 355 mm rear rotor based upon the design of the HSV rear 350 mm rotor should work just fine and need no bracket or custom e-brake shoe.

BUT THEN I SEE THIS ADS:

http://www.ebay.com.au/itm/VE-VF-HSV...-/171542693343

They say this is a bolt-on upgrade for the VE and VF. It uses 4-pot Brembos and 350 mm rear rotors. How can this not have the same overhanging pad problem we do when fitting a 350 mm HSV rotor to a G8?

From our experience, there is something missing with this conversion. The dimensions do not add up or they are not telling you the pads are special or modified or need to be modified to fit and not overhang a 350 mm rotor. OR, the Ve & VF in Australia use a slightly different hub (very unlikely, IMHO).

Attached are drawings of the VE (G8), Camaro SS and HSV VE rear rotors. You can see the in and out location of the disk relative to the "drum" varies with the application. The HSV disk location, from experience using it, centers up on the caliper very closely when the Brembo is bolted directly to the hub. The Camaro SS disk location requires a bracket/space. The bracket/spacer not only positions the caliper out far enough to work with the 365 mm Camaro SS rotor, it also shifts the caliper sideways to align with the center line of the rotor.

Wow, did not mean for this to ramble on and on.

My conclusions:
1) '15 Chevy SS will use a 355 mm version of the HSV 350 mm rotor and everything will be peachie! (Great for G8 conversion.)

or

2) '15 Chevy SS will use the HSV 350 mm rear rotor and will have rear hubs with different caliper mounting locations to move the caliper 2-3 mm closer to hub. (Not so great for G8 conversion.)

or

3) '15 Chevy SS will use the 350 mm HSV rotors with some pads that have a narrower contact patch so they don't overhang the rotor edge. (OK for G8 conversion.)

or

4) contrary to what has been stated, the calipers are slightly different with their mounting holes moved to position the caliper the correct distance from the hub to align with the 350 mm rotor edge. (Should work for G8s but calipers will be unique, not Camaro SS or CTS-V.)

Anyway, these are just some ramblings of an old man. Take them for what they are worth. LOL