[Defiant2]

How do we connect that fresh-air "window" in the front fender lining to the center of the rotor/hub so the brakes get the most benefit? Is there a shield or backing plate with a "window" where some form of flexible ducting could be used to connect the two? (Or fine as-is?)

[M Fifty]

On the race variants there are flexi-hoses and vented backing plates.

[SEAT TIME RULES]

I'll be fitting a backing plate solution to my 2020. Real easy to do with the ducting already in place in the bumper cover and wheel well liners.. Just need to work on how to hang the hose so there's enough room for the wheels to move lock to lock.

I've done this on a E36M3 a E46 M3 a EVOX and now the M2C.

One of the biggest benefits is you get more life out of your front pads with the air being forced thru the rotors to pull the heat out of the pads faster.

Your pedal feel and modulation stays consistent as well. This is worlds better than air scoops, etc...

You do need to replace the hose every once in a while from rubbing in the wells.

Minor inconvience. I wonder where we can get a backing plate that fits these hubs?

HAZMAT

[OldDirtyCoaks]

Any of you guys have a service manual for swapping the pads?

Have a lot of pad left but also two track days in the next few weeks and the course is hard on the brakes.

Want to be sure I can pass tech or swap pads in a pinch if it comes to it.

[Malakas]

Originally Posted by SEAT TIME RULES

I'll be fitting a backing plate solution to my 2020. Real easy to do with the ducting already in place in the bumper cover and wheel well liners.. Just need to work on how to hang the hose so there's enough room for the wheels to move lock to lock.

I've done this on a E36M3 a E46 M3 a EVOX and now the M2C.

One of the biggest benefits is you get more life out of your front pads with the air being forced thru the rotors to pull the heat out of the pads faster.

Your pedal feel and modulation stays consistent as well. This is worlds better than air scoops, etc...

You do need to replace the hose every once in a while from rubbing in the wells.

Minor inconvience. I wonder where we can get a backing plate that fits these hubs?

HAZMAT

Once I get my M2c up on a lift this will be my first project to figure out... Probably a custom (or customized) backing plate plus some clever hose routing will be in order... Add that to SRF + stainless lines and some Carbotechs for track days and I think unless you're doing tons of DE events, this will be more than enough to have some fun times with good brakes.

I'll probably do a couple of weekends at a COTA which is especially brutal on the brakes as you're bringing down a 3500 lbs car from decent speed as you enter 12. Heat is your enemy there as I learned by cooking a set of pads and rotors in 3 days in my GTR.

[Megator]

I would think any of the minimalist M2/3/4 brake cooling backing plates would also work for the 2NH brakes as the mounting points will be the same.

As for connecting to the air outlets in the fender wells I am going to take some measurements this weekend and 3d print an adapter (or make a mold for CF ones).

[SEAT TIME RULES]

Originally Posted by Megator

I would think any of the minimalist M2/3/4 brake cooling backing plates would also work for the 2NH brakes as the mounting points will be the same.

As for connecting to the air outlets in the fender wells I am going to take some measurements this weekend and 3d print an adapter (or make a mold for CF ones).

I'd be interested in what you come up with that fits into the OEM ducts.

THX
HAZMAT

[Megator]

Originally Posted by SEAT TIME RULES

I'd be interested in what you come up with that fits into the OEM ducts.

THX
HAZMAT

Had some time last night and I made a prototype. Needs to have the corners rounded and the duct fitting portion will be pretty much perfect.

Going to angle it inwards more so there is more clearance. Need to check how close the tire gets to the duct. If it is too close I will flaten it and lengthen it backwards before going to the round outlet. The outlet is 2.5in.

[SEAT TIME RULES]

Looks great.

I'll take a pair if you want to make another set sir!

[Malakas]

Looking great!

[dan@ferbers.us]

Thanks for the great posts and replies. Very helpful. I have a 2021 M2 Competition with 2NH “M Sport Brake” with silver-colored calipers. I think that a few previous posts have said that the Pagid 4934 (front) and 1287 (back) track pads fit the 2NH. Do I have that right?

Any other track pads (other than OEM) you'd recommend front/back for the 2NH brakes?

I ask because I found it a bit hard to find 2NH and specific pad make/models in the same post, from those of you that run them and know they work.

Thanks.

[M2C_PLUS]

Originally Posted by dan@ferbers.us

Thanks for the great posts and replies. Very helpful. I have a 2021 M2 Competition with 2NH “M Sport Brake” with silver-colored calipers. I think that a few previous posts have said that the Pagid 4934 (front) and 1287 (back) track pads fit the 2NH. Do I have that right?

Any other track pads (other than OEM) you'd recommend front/back for the 2NH brakes?

I ask because I found it a bit hard to find 2NH and specific pad make/models in the same post, from those of you that run them and know they work.

Thanks.

I will be running these for track.....

Big Grey caliper brakes, pad part numbers.....

Ferodo Front pads FCP4712Z DSUNO
Ferodo Rear pads FCP1281W DS1.11

[CSBM5]

Originally Posted by dan@ferbers.us

Thanks for the great posts and replies. Very helpful. I have a 2021 M2 Competition with 2NH “M Sport Brake” with silver-colored calipers. I think that a few previous posts have said that the Pagid 4934 (front) and 1287 (back) track pads fit the 2NH. Do I have that right?

Any other track pads (other than OEM) you'd recommend front/back for the 2NH brakes?

I ask because I found it a bit hard to find 2NH and specific pad make/models in the same post, from those of you that run them and know they work.

Thanks.

Dave Z is always a great source: https://www.zeckhausen.com/catalog/i...th=3_7079_8092

[GFEA]

Originally Posted by M2C_PLUS

I will be running these for track.....

Big Grey caliper brakes, pad part numbers.....

Ferodo Front pads FCP4712Z DSUNO
Ferodo Rear pads FCP1281W DS1.11

+2 on this. I've ran the stock 2nh with steel lines and motul 660 brake fluid with Ds1.11 for 6 track days with no issues.

My rotors are finally worn out at about 25k miles on the car and 6 track days so i'll be switching to AP soon.

IMO, at least use the fuck out of the stock system before you replace it. I've had a blast with them. I see a lot of guys out there with the stock rear and AP front to run 18" wheels. I also see people put the OG m2 front rotors on as well to accomplish that. It comes down to budget I guess.

I'm very happy with the DS1.11 and ive heard the 3.12 has a lot of bite thats hard to manage.

[iWayne]

Anybody else experiencing a lot of pad knock back with the 2NH brakes? Even if i take some corners on the street, it feels as if i need a quick touch of the brakes first before i have full clamping force.

[dangaroo]

Originally Posted by iWayne

Anybody else experiencing a lot of pad knock back with the 2NH brakes? Even if i take some corners on the street, it feels as if i need a quick touch of the brakes first before i have full clamping force.

Yes I get knock back every time on a little route near my house. A series of 90 degree turns with about 4 consecutive corners of chucking it in with no brakes, then into a fast straight section. First time I got to the end of the straight section I nearly crapped myself when I went to brake and the pedal was long. So now I've learnt to give it a quick pump before hitting the brakes.

[M2C_PLUS]

Originally Posted by GFEA

+2 on this. I've ran the stock 2nh with steel lines and motul 660 brake fluid with Ds1.11 for 6 track days with no issues.

My rotors are finally worn out at about 25k miles on the car and 6 track days so i'll be switching to AP soon.

IMO, at least use the fuck out of the stock system before you replace it. I've had a blast with them. I see a lot of guys out there with the stock rear and AP front to run 18" wheels. I also see people put the OG m2 front rotors on as well to accomplish that. It comes down to budget I guess.

I'm very happy with the DS1.11 and ive heard the 3.12 has a lot of bite thats hard to manage.

Agreed mate, no issues here, I love these pads and when swapping back to OEM road pads I've had no issues with vibration or squeaking.

Once my front discs are done I will swap the front oem kit out for an AP kit to run my 18inch wheels, even if its just for the weight loss of unsprung mass of the heavy Grey kit.

[OG Shark]

Originally Posted by GFEA

+2 on this. I've ran the stock 2nh with steel lines and motul 660 brake fluid with Ds1.11 for 6 track days with no issues.

My rotors are finally worn out at about 25k miles on the car and 6 track days so i'll be switching to AP soon.

IMO, at least use the fuck out of the stock system before you replace it. I've had a blast with them. I see a lot of guys out there with the stock rear and AP front to run 18" wheels. I also see people put the OG m2 front rotors on as well to accomplish that. It comes down to budget I guess.

I'm very happy with the DS1.11 and ive heard the 3.12 has a lot of bite thats hard to manage.

I go back and forth on 1.11 vs 3.12. I use both but have been running 3.12s during all my recent testing - one of the goals being improving my braking. The 3.12 definitely have more bite which can lead to getting into abs more - but they are still very manageable when you do. With some time they also lend themselves to getting a very good feel for that threshold due to their consistency. Feel like they both have their uses but I'm starting to prefer the 3.12 more often than not.

Do think the 1.11 is a better overall choice though for a track day pad especially in the wet and/or with tires that are not very high grip. Excellent performance still and friendlier on the discs.

[ZM2]

Good Ferodo pad comparison charts here: https://www.ferodoracing.com/product...ng-brake-pads/

Shows why DS2500 is a good street pad but not good track pad for our heavy cars, the range of the 1.11, why 3.12 is my personal go-to, and why I hated the Uno.

[n8dgr84]

Does anyone run the stock pads on the street and race pads on the track with any negative effects? Essex likes to say the DS2500 is a good starting point because they can be used on the street and if that's not enough, the 1.11 can be swapped out without much burnishing due to the similar compound.
Is that a legitimate issue?

[FaRKle!]

Originally Posted by n8dgr84

Does anyone run the stock pads on the street and race pads on the track with any negative effects? Essex likes to say the DS2500 is a good starting point because they can be used on the street and if that's not enough, the 1.11 can be swapped out without much burnishing due to the similar compound.
Is that a legitimate issue?

I run EBC reds on the street and run pagid RSL 29 and PFC08 for the track on my wagon. Typically after switching back to the street pads after a track day I can feel a little bit of build up from the track pads but that gets worn away after a week or so. It's really not an issue.

Another thing you'll want to watch out for is if the pads aren't exactly the same size from your street to track brand. That'll cause some uneven wear on the rotors, but hasn't been a show stopper for me.

All in all, I wouldn't worry about it too much.

[Fabb]

Originally Posted by n8dgr84

Does anyone run the stock pads on the street and race pads on the track with any negative effects? Essex likes to say the DS2500 is a good starting point because they can be used on the street and if that's not enough, the 1.11 can be swapped out without much burnishing due to the similar compound.
Is that a legitimate issue?

I just started not to care about street pad at all. It's a sports car just put better pads on it. My ds2500 burns half of its life in one track day. Switched to ds1.11 and never look back