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05-15-2026LAST POST
The recent pictures of the M2 Competition show rather nice front calipers (6 pot?) and I wonder whether these would be compatible with the discs and wheels on the E92 M3 (Competition pack, so 19" wheels).

Ditto for the rear calipers.

I do like a nice bit of brake jewellery, and this is something that is quite disappointing with the standard calipers....
A few folks make adapters to run F80 calipers and rotors on the E9x. I would *expect* that they would work for those M2comp brakes.

Given the other inexpensive Brembo options or expensive BBK options, I wouldn't expect that this is the best return-on-investment outside of looks.
Visceral wrote
A few folks make adapters to run F80 calipers and rotors on the E9x. I would *expect* that they would work for those M2comp brakes.

Given the other inexpensive Brembo options or expensive BBK options, I wouldn't expect that this is the best return-on-investment outside of looks.
But OEM+ bro...
Anything is possible with enough time and money.

I think the biggest blocker to actually installing these will be the purchase price since they're brand new. It's not going to be cost effective versus an aftermarket BBK, but maybe in a few years there will be some lightly used ones available.

Hard to tell from the photos, but they look very similar to the M5/M6 calipers...
It's probably comparable in price to the M5 caliper, and that's $1100 per side from ECS, but their front and rear M5 caliper retrofit kit for the E9x is only $3800 which isn't totally outrageous though it doesn't include calipers (which you can buy and bolt on separately)

But I don't know why one wouldn't just buy the AP Racing kit at that price either, and shed weight from the car and get better performing parts and easier pad changes and and and

But I don't hard park so maybe the M stickers are important
Richbot wrote
It's probably comparable in price to the M5 caliper, and that's $1100 per side from ECS, but their front and rear M5 caliper retrofit kit for the E9x is only $3800 which isn't totally outrageous though it doesn't include calipers (which you can buy and bolt on separately)

But I don't know why one wouldn't just buy the AP Racing kit at that price either, and shed weight from the car and get better performing parts and easier pad changes and and and

But I don't hard park so maybe the M stickers are important
$3800?! That's PFC BBK territory.
Has anybody retrofitted the standard M4 calipers yet (4 pot front, 2 pot rear)? That would be a fair/modest upgrade and should be cheaper than the 6 pot ECS upgrade.
wyatth wrote
Has anybody retrofitted the standard M4 calipers yet (4 pot front, 2 pot rear)? That would be a fair/modest upgrade and should be cheaper than the 6 pot ECS upgrade.
Its been done a lot. I think ECS even sells the kit. For the money, it's not a great ROI unless BMW OEM looks are super important.
I was looking for some better brakes for mine without having to spend a fortune.i came across a guy on facebook "patrician vip". he has stacks of calipers and makes his own adaptors. sadly he wouldn't ship to me in the uk.dont know if you would better luck in the US.
Visceral wrote
Its been done a lot. I think ECS even sells the kit. For the money, it's not a great ROI unless BMW OEM looks are super important.
I only saw the 6pot/4pot combo. Indeed that was overpriced. It's the standard brakes which I thought would be cheaper.
IND sells brackets to get the F8x CCB's to work on our car, with a different booster, for the low low price of $13,700

But just think about how much you'd save on...something

I have to admit I'm tempted. It's a huge weight savings and goooooooolllllld
Old stuff, but they won't fit on 359.
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2NH's and 763m's... Good taste.
KawBoy wrote
Old stuff, but they won't fit on 359.
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If you go this route, you will probably be stuck with wheels 19” or larger. Going to 18” wheels will not be possible afaik.
swe_m3 wrote
If you go this route, you will probably be stuck with wheels 19” or larger. Going to 18” wheels will not be possible afaik.
This is absolutely correct.
I have 6 pot front calipers from a G87 M2 (same calipers as G80 M3s and F90 M5 and M8s) on 380mm discs and inside 19" 220 wheels they only just squeeze in. At the point of tightest clearance, the calipers are within 5mm of the wheel. Tight!
Tristan1980 wrote
This is absolutely correct.
I have 6 pot front calipers from a G87 M2 (same calipers as G80 M3s and F90 M5 and M8s) on 380mm discs and inside 19" 220 wheels they only just squeeze in. At the point of tightest clearance, the calipers are within 5mm of the wheel. Tight!
On the f8x, you can run 2NH or 2NK front calipers with a custom caliper mounting bracket with GiroDisc custom front 380 mm OD rotors with the same PRD as the 400 mm OD iron rotors and GiroDisc rear 380 mm OD rotors. You can easily run most 18” wheels with this setup. The lighter 380 mm OD rotors and the ability to run 18” wheels significantly reduces the mass on the front end and it significantly reduces the rotating inertia resulting in improved ride quality and a measurable improvement in turn-in/changes in direction.
I am running f10 m5 calipers with f80 rotors and ecs brackets on stock 359m wheels.
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If you plan on running an 18" wheel, Brembo makes a specific 365x34mm rotor + 6 piston caliper that fits under most 18's.