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Brembo Brake thoughts

13113 Views 21 Replies 5 Participants Last post by  DrivenDaily
So, for the past month or so I have been measuring and comparing between the Cobalt SS/TC and my malibu. I was considering buying the brembo brakes from a cobalt to put on my car, but now I have decided to just leave it alone. Either way I thought I would share what I have found so far if someone wants to try to see if it works for sure.

I am basing this off an LTZ malibu with the wheel design in my sig pic.
Cobalt SS wheels: Offset +42MM, w/diameter 18", width 7.5", bolt pattern 5x110
Malibu LTZ wheels: Offset +41MM, w/ diameter 18", width 7", bolt pattern 5x110"

Cobalt hub center OD: 2.5" diameter
Malibu hub center OD: 2.5" diameter

Cobalt SS rotor thickness new: 1.023"
Malibu rotor thickness new: 1.023"

Cobalt SS rotor diameter: 12.4"
Malibu rotor diameter: 11.6"

Cobalt caliper mounting bracket center to center: 4 7/8"
Malibu caliper mounting bracket center to center: 4 7/8"

There are some things I have not been able to compare yet though. I can't remember if the cobalt ss wheel design from behind is much different from the LTZ malibu wheel for clearance. From the looks of it there would be plenty of clearance, but I am not sure. I haven't been able to find the overall height of the rotor to compare (bottom of the rotor to the top of the rotor).

Basically what would have to be changed out is the calipers, rotors, pads, banjo washers, and brake hoses (from the caliper to the body since the mounting angle is different at the caliper).

The main benefit of this swap would be better stopping power. The Cobalt SS/TC Brembo brakes are 4 piston calipers with a larger rotor diameter. The malibu front brakes are only one piston calipers with a smaller diameter. I think it would work well to stop the heavy malibu a lot better over just swapping pads and rotors to aftermarket.

Again this is all I have found, but I have not tested to see if this would work or not. I think it would, but there may be something that I am missing. I just wanted to share what I have found and maybe someone has better resources to see if it will actually work. It is a long shot, I know, but since there is no aftermarket support for the malibu this is the only way I can find what will work.
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Some G6 owners already did the brembo swap and claimed a day and night difference in braking.

Brembo Brakes, Finally!!!!
^^ sorry about that, thought everyone can view it. if you're planning to do the swap, then I'd strongly suggest to register and see this 13 page thread.

Re: Brembo Brakes, Finally!!!!

yes. you will need spacers. at least 5mm, albert and i went 15mm simply for the wider stance and clearance to clean them. i called many rim companies and the biggest offset they offer is 42mm. i think the brembos require a 45mm offset. so basically you will need spacers.
if you run anything bigger then 5mm, you will need to get longer wheel studs like we did.
as for pictures, they are in the thread just look. but for the lazy ones heres pics again

this picture is with the 5mm spacers, just too close for me.

Keep in mind that calipers are originally black, but these are powder coated red.
As per the OP first post, LTZ wheels have 41mm offset, so you would probably need 5mm spacers to clear the brembos.
According to this wheel calculator the extra half inch plus 1mm offset will make the cobalt wheels .3inch wider backspace.
Also, keep in mind that cobalt wheels were designed to clear the brembos with minimal offset.
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