vtune

I'm in need of rotors and pads, all around.

Car is a 2013 Coupe - with Perf. pack / P31

Fronts are an issue - are P31 / P30 parts identical? Does anybody know exact OE part #s for P31 rotors and pads?

Also - I read someone you can use standard C63 rotors on P31 cars, but dealer said it will not fit or it will cause issues down the road. Can someone confirm? (Technical question, know the benefits of the p31 rotors)...

Thanks in advance !

chrisridebike8

Typical dealer. Standard rotors will fit fine. You will have no issues running non-P31 rotors. Sorry, I don't have any part number. All pads are the same

realjones88

P31 rotors are 2124210512 they are about seven lbs or so lighter than the solid ones.

Solid ones are completely interchangeable at about 1/5 the price. The part number is 000421201207. Honestly for a street car you won't be able to tell the difference, but that it is up to you.

Pads are 0074206520 - the Porterfield R4S are also popular.

roadkillrob

This - save yourself a bundle and go solid unless you are tracking the car!

tpliquid

i like the look of the P30 rotors better than the p31s the 2 piece looks so racecar

roadkillrob

They are both 2 piece, the P30 and P31, do you mean you like them better than the non P package rotors?

tpliquid

P30:



P31




P30 looks better

roadkillrob

Yes, both 2 piece but P30 looks better for sure - the way you worded it may me think you meant the 2 piece look better even though both are.

tpliquid

p31 is composite rotor so i consider it not 2 piece.

m a x i m u s

P31 is "1.5 piece", the hat is molded to the ring. The P30 is a true floater with the hat bolted to the ring. You can barely see the bolts on mine, though, bc of all the dusting and the wheel itself being in the line of sight. I agree that the P30's only make a mechanical difference, not so much aesthetic on these cars.

TheInfamousDrew

Since we're on the topic....

What pads do people prefer?

I've read that most people like the Porterfield R4S.
In the past I've gone with "low / dustless" pads like Akebono, Cool Carbon, or Posi Stop. Seem like they don't make them for our car.

Lastly, are the pads for the P31 package different than the others?
I've noticed that some sites have different part number for "cars with red calipers".

From ECS:

0074205320
For Vehicles With AMG Performance Package (Code P30) -
Not For Vehicles With Brake Calipers Painted Red (Code U70)

0074206520
For Vehicles With AMG Performance Package (Code P30)
With Brake Calipers Painted Red (Code U70)

0074205920
Not For Vehicles With AMG Performance Package (Code P30)-
Not For Vehicles With Brake Calipers Painted Red (Code U70)

https://www.ecstuning.com/Mercedes_B.../Braking/Pads/

ML63 AMG

You could get 2 piece RacingBrake rotors for less. They weigh 3lbs less per rotor than even the P30 rotors

RacingBrake

If you are going to own the car for long and occasionally track the car or some spirited (mountain/canyon) driving, consider investing two piece rotors which over the time can actually save you money (in replacement hassle and down time) over 1 piece rotor.

You definitely appreciate the difference of lighter (substantial weight saving) for quicker pedal response in acceleration and deceleration, driving comfort and save the wear and tear on pads and other suspension components. If you still don't believe it just think why the high end cars come with two piece rotors.

Here is a long term testimonial from an E63 customer about the durability of RB two piece rotors.

https://mbworld.org/forums/w211-amg/...ml#post6831050

Like to two piece rotors:
http://www.racingbrake.com/Mercedes-.../mb-irk-18.htm

Front only:
http://www.racingbrake.com/Two-piece...ONT-p/2141.htm

Price includes our most popular low dust and no squeaking RB XT910 pad - Everything you need in a box for an easy bolt on installation.

We are adding new Mercedes customers on weekly basis, and we offer money back guarantee if after you receive the order, you disagree RB two piece rotors are not the best in the industry your money worth in design, quality, and how it performs, or even you don't like how it looks - Just call us for refund.

Diabolis

+1 on RB. And, they don't overheat and warp under track use with aftermarket pads!

AMG3.2

Endless MX-72!

Diabolis

+1 on this as well!

NeverSettle

I have a 2012 P30 with the track pack (and red rotors) and Every - and I mean EVERY site I go to that asks for me to enter a model, it's Base, Coupe, or Black.
I ordered a full rotor set up from FCP and they shipped (1400 for all 4 corners - Bembro/Z's) and low and behold, they are the wrong setup.
I had the Tech pull up the schematics based on my VIN, and I thought i had the xxx502 part - which are offered by Bembro and zimmerman. the rears are solid (1 piece) and are pretty cheap. the xxx502 break rotor kit (front) zimmerman was about 300 less than the Bembro. they are all over silver.

BUT - according to the schematic - I have xxx512 rotor. I am trying to attach the schematic for additional info.
I am adding this information because there seems to be a pretty wild difference between what is reported, assumed, and relayed. I dont know how absolute these parts are - but I assume they are pretty specific.

I will be taking pics/vids of the 4 corner break replacement for my 2012 c63 coupe with the P30 and track pack. Ill document all the parts they send, and try and post for the DIY's out there.

I also have the "wrong" set coming, as FCP couldn't stop the order in time - so, Ill see if I can take pics of all the parts.
note: FCP was very cool about it and sent a return label.

Here are the breaks I "Thought would fit" (notice they have the xxx520 number)
https://www.fcpeuro.com/products/mer...mbo-0044208420
and here are the ones the Tech said was spec: which in fact claim to the xxx512
https://www.fcpeuro.com/products/mer...-brembo-517602

Texas E63

if this is a long term hold and you may track or drive it hard the Rb's are worth it IMHO - they're truly impressive, best braking I've had short of a mov'it kit..... otherwise go with the base 1.5 setup and a set of Endless pads.

E

go team

This. Is much appreciated! It’s hard to assume and in a forum cluttered with mb specialists it’s nice to have an honest feedback post!

Someone correct me if I’m wrong but I do believe either rotor should fit. One is the 2 piece and the other “1.5” piece. I much prefer the looks of the one getting sent to you in error.

Crya

iTrader: (1)

'09's and '10's I believe both had the true two-piece made by brembo, which are pretty sweet. The later years with P30 have the "1.5" piece as they're referred to around here. They ALL fit and are reverse compatible or whatever.

Mort

I had a 2010 P31 and it had the Brembo composite rotors that are referred to as the 1.5 setup. the 2009 P30 had the 2 piece Brembo rotors. All later year P31 cars have the 1.5 Brembo setup as well.

skratch77

Huge price difference between performance pack and standard rotors at my dealer.

160 each non p30 and like 930 each for the 1.5 piece p31 front rotors.

NeverSettle

I you are saying I can use either of the ones I ordered? even the ones the guys at the shop say are not "correct"?
I ask, because I really like the Bembro's - and I thought they we standard for my car - but apparently, the Zimmermans are - and I really dont like the way those look.

BLKROKT

All C63 rotors are 100% totally interchangeable. 1-piece, 1.5-piece and 2-piece. The only C63 rotors that won’t fit without modification are the ones from the Black Series.

BalanBro

The ones you ordered the first time won't fit, because you ordered the kit with 390mm rotors for the C63 Black Series. However, there is another 2 piece Brembo that is 360mm, and that will fit and is what I am running on my 2012 P31. That's the one I linked on the other brake thread.