VaclavSV

Where should I order 2 piece rotors and pads for all 4 corners? I have P31 package and want something equal or better in performance. What options have some of you gone with? Thanks guys!

abcut973

Your best bet would be online OEM part stores or vendors selling good after market products on here.

Girard@ACGautomotive

Girodiscs and Porterfields would be my recommendation. Just did them on my '12 P31 C63 last week.

Pics below of comparison:

Stock Rotor 30.6 Pounds:



GiroDisc Slotted/Drilled Rotor 24 pounds and directionally vented left and right:



Stock Rear 21.2 Pounds:



GiroDisc Rear 14.6 pounds Slotted / Drilled and directionally vented:



End result looks great paired with some new stainless lines and Porterfield R4-S pads:



Absolutely no noise, virtually dust free, great stopping power and an all around performance gain. Not to mention it shaved 26.4 pounds of total rotational mass. Win win everywhere if you're due for new brakes

sinape62

Whoa, those are quite significant weight reduction. The Porterfields have different (more) hole patterns... And look great!

roadtalontsi

I hate to tell you this but that rotor is on the wrong side if these are directional left and right.

VaclavSV

Hey Tal!

Thanks for the info! would you be able to quote me on this setup?

Many Thanks,

Sajun

AMG Boost

Sorry to bring this up. Does it not look like this rotor is installed backwards?

Also thanks for the info. I will be looking at these once my OEMs are done

zibby43

Porterfield is the name of the manufacturer of the brake pads.

The rotors are Girodisc.

wampire

Hi can you tell me if they are the same diametar size or bigger? or better to ask is there the same braking area or larger then the P31 package

papashango

Would like a quote on those rotors as well to get an idea and compare to OEM costs. Thanks!

Rolf de Graaff

No, the rotation is correct...I have giro discs installed a few weeks agro and this is how it is descibed in the manual.....

Rolf de Graaff

No it is correct this way..... This is hoe it is descibed in the Giro manual.....I have installed them a few weeks ago and also in that direction......I only have the non drilled version, but the drilled ones look way better

AMG893

These looks like the EVO Sport ones i put on my E63

Jasonoff

It's even marked left in the pictures.

It's not the slant direction of the slots/holes that's the directional indicator. It's the vane direction.

I have noticed a lot of designs are Uni Directional now. Like the StopTech rotors that are available.

Merc63

Did you measure your rotors?

Girard@ACGautomotive

Yeah they are extremely light in comparison to the OEM. Thank you

They are installed correctly... As noted above it's not the direction of the slots or holes, correctly vented rotors are based on the direction of flow through the internal veins. Pic below demonstrating how the airflow veins are internally on these rotors... (I just put a flat head screw driver in the rotor to demonstrate the direction of how the veins direct airflow):



Of course! PM sent.

They are the same diameter and thickness as OEM... Just lighter weight, directional and serviceable.

Sure thing, PM Sent

Exactly the same.... Giro Disc manufactured these for Evosport.... Identical to the Evo rotors on my E55 as well I just wish the current Giro rotors had the same darker anodized finish on the hats:

Girard@ACGautomotive

Bingo

I did not unfortunately but in terms of wear my car had 11,xxx miles and they were not in need of replacement... I couldn't tell you exactly what a factory OEM rotor weighs but it couldn't be much more than what I pulled off the car.

TUF-C63

Can I get a quote on this setup as well please?

Girard@ACGautomotive

PM Sent

AMG Boost

EDIT: sorry misread.

WESLEY KAY

Will this setup work on a 2014 C63 507? If so, I'll take a pm as well for pads and discs! All four corners. Drilled and slotted. Thanks!

tfthach13

I have a 2009 C63 on stock 18" wheels without the performance package (i.e. 1 piece rotors)...will these 2-piece directly replace my 1-piece? Or I need to have the P31 package to install these?

Girard@ACGautomotive

Absolutely! PM sent

They are fully compatible with your C63 as well

Kriston

That's a great deal of weight savings over the stock P31 2 piece rotors!

This is an amazing setup for those without the stock 2 piece rotors. I can only imagine how well the car launches with over 5-6LBS of savings per corner.

Diabolis

How did you manage to wear out a set of rotors on a 2014 so soon?