[Boosted_8]

I'm kind of tempted by the M performance brake upgrade. Who is selling it cheapest right now?

[jsf721]

My wife and I both have the G30. Mine is the 540 with M sport brakes and my wife has the regular brakes.

To me the M sports look great. I think they stop great. Slight squeaking at very cold temps and near the end of their lives. My wife’s are silent and stop pretty good too. Hard to say if the M sports are much better but I’ll keep buying mine for the cosmetics and and additional stopping power they may have.

Same brake dust that is lots.

[The Zimmer]

Originally Posted by Boosted_8

I'm kind of tempted by the M performance brake upgrade. Who is selling it cheapest right now?

Depends what you after buddy I upgraded mine with G05 Calipers and MPerformance Discs

[Knifeedge2k1]

Originally Posted by jsf721

My wife and I both have the G30. Mine is the 540 with M sport brakes and my wife has the regular brakes.

To me the M sports look great. I think they stop great. Slight squeaking at very cold temps and near the end of their lives. My wife’s are silent and stop pretty good too. Hard to say if the M sports are much better but I’ll keep buying mine for the cosmetics and and additional stopping power they may have.

Same brake dust that is lots.

Unless you're absolutely caning it on a mountain road with lots of elevation changes and corners that are both far enough apart that you're able to use lots of throttle began the corners AND not so far apart your brakes have enough time to dump heat into the atmosphere... You're simply not going to see real life benefits of bigger brakes.

In a one stop panic stop scenario there is NO difference between the brakes in teens of performance. It will 100% be tire limited and I have the stats to back that up.

Benefits of big brakes is primarily (if you ignore looks) in heat capacity and dissipation, neither of which are limits that can be reached in any realistic street use (even aggressive street use).

[Knifeedge2k1]

Some math

Vehicle weight @ 1600kg

Panic stop from 200kph (124mph) to 0

Front rotor weight (single rotor) 10kg (348mm normal rotors on the G30)

Kinetic energy @ 200kph (2500kj)

Specific heat capacity of cast iron (0.46 kj/kg/Kelvin)

So even if ALL the energy of the car went only into the front rotors alone (in reality aero drag would help dissipate a lot of this at least initially) AND the rotors didn't dissipate any of that energy into the atmosphere (unrealistic) , the rotors would only increase temperature by 260 celcius.

That's a lot, but it isn't quite in oh shit brake fade territory yet and although you definitely shouldn't attempt another panic stop anytime soon, you can reliably expect your car to do this without trouble and without glazing your pads or boiling your fluid.

Realistically your not going to be doing loads of 200kph to 0 stops ever and you'll need to do FOUR 100kph to 0 stops to equal the amount of energy as a single 200 to 0 stop (without any energy being dissipated into the environment)

The real killer to brakes in the real world are steep and long downhill runs because gravity is constantly putting energy into your vehicle. Even the best canyon roads with loads of twisties aren't going overwhelm the crappiest 5er stock brakes.

With that said I still upgraded my base brakes to the red M Perf versions because I like the look

[Boosted_8]

These guys seem to be the cheapest i can find:https://****************************...ts/34112289348

[peteinpa]

Originally Posted by rjjr1963

I went ahead and had my calipers painted red.

I am thinking about doing the same. Did you put the ///M decal on the rear? If so where did you get them?

[rjjr1963]

Originally Posted by peteinpa

I am thinking about doing the same. Did you put the ///M decal on the rear? If so where did you get them?

The shop I took it to did everything.

[Dallasguy1985]

Originally Posted by rjjr1963

The shop I took it to did everything.

Only reason I didn't pass on this car were the M brakes after looking at many this was the only one with

[Boosted_8]

Got the M perf kit on yesterday at the dealer. Just been bedding them in. The do seem a bit louder but that's to be expected with dimpled discs. Not 100% sure but the rears sound little bit rattly as well, is this normal?

[EricSMG]

Since I bought new it was a must have at only $650 for the kit. They look KILLER and feel great. Do I think they work better than the base brakes? Can't say. My gut says no meaningful difference other than probably pedal feel... normal everyday driving.

But the big brakes are for sure confidence inspiring. I drive fast and never even think about the brakes = that's what you want.

[Boosted_8]

.

[ianerrid]

Originally Posted by Old Boy

How common do you think the M Performance brakes are on G30 cars, or even on any and all BMW vehicles ?

My sense is that we could be talking about one in a thousand BMW vehicles that is retrofitted with M performance brakes, i.e., 0.1%. Perhaps not even that ?

In fact, I do not recall ever seeing a BMW with red calipers. Even the blue calipers are not that common in the general BMW vehicle population in my city.

Must be a USA thing, the M Performance brakes are quite common on UK cars as ours are specc'd differently from the factory for the UK market?

[buddyboy]

Originally Posted by ianerrid

Must be a USA thing, the M Performance brakes are quite common on UK cars as ours are specc'd differently from the factory for the UK market?

Are you sure you are not mixing up the blue Brembo M-Sport brakes with the red mperformance ones? There might also be red ones in the small disc sizes, Mperformance ones are 390mm + on the front i think compared to the more common 348mm or 374mm ones

[Boosted_8]

MP brakes are 395mm front 370mm rear iirc

[admranger]

Are we still stuck with factory pads for the ///MPerformance brakes? I'd really like ceramic pads, but don't want some of the "lesser" brand pads that are out there for our brakes. I'd prefer Akebono, PFC, Pagid, or Hawk.

[Boosted_8]

Have any of the guys running M performance kits changed the dimpled rotors to either solid from the M760 or drilled through from the F90 M5. The crickets are really getting my my nerves now it's warm and I have the windows open...

[ravipersaud]

Originally Posted by PetieD 7

Recently, my local BMW service department installed the front/rear Brakenetic slotted rotors with EBC Redstuff pads. Besides the enhanced looks and less dust, the result…I would say a decent increase in the overall brake performance from OEM brake system!

Looks great! I noticed this is the M Sport brakes. Could you provide the EBC part # because I would like to know the right one to get for the M sport specifically. Thanks!

[M550bernina]

Originally Posted by Boosted_8

Have any of the guys running M performance kits changed the dimpled rotors to either solid from the M760 or drilled through from the F90 M5. The crickets are really getting my my nerves now it's warm and I have the windows open...

Did your issue resolve itself? I was going to go with the M-performance kit, but I was told by many to stay away from dimpled rotors.

I think I'm just going to do an F90 conversation as I could use the 6 piston stopping power. There are quite a few totaled F90's in the United States and I can pick up late model with low mileage calipers for cheap. I would buy new rotors and pads.

[PetieD 7]

Originally Posted by ravipersaud

Looks great! I noticed this is the M Sport brakes. Could you provide the EBC part # because I would like to know the right one to get for the M sport specifically. Thanks!

EBC Redstuff brake pads:
Front: DP32304C
Rear: DP32089C

Although the front EBC Redstuff brake pads indicate that it’s for “7 series”, it still can fit on the front of 540i w/ M Sport brake system!