gcm747

I'm not sure what your position is. I own a C63, I am tracking the car, I have had problems with the brakes and I'm asking some questions around heat build up. Your suggestion that the discs run at 1000-2000 rpm is ridiculous. In order to know this, you'd have to know vehicle speeds. Which you don't.

I can only assume that you don't really own a high performance vehicle like an AMG. I'm very sorry I posted my comments. I was hoping to get real comments from real owners.

deadlyvt

Don't get your panties in a bunch, most wheels block all but the smallest amount of air from getting to the rotors anyways so unless you are running dedicated brake cooling ducting it's a moot point

gcm747

What a joke. Good luck with your little boys club. This isn't a forum interested in discussing real issues by any means. I'll continue to work with people that actually have a clue.

604 C63

I currently drive a P30. This is my second C63. I have had the P30 2 piece rotors (which are not true piece as has been discussed ad infinitum) as well as two other brands of aftermarket rotors. I have also had stock pads, as well as two other brands. I track my car 4-6 days a year, over 4.5 years of ownership. Based on that, I would venture to say my experience level is at the higher end of the spectrum. But, I would also say I am more a gut feeling, butt dyno kind of guy, and have never taken temp readings off my brakes for example.

When discussing the front rotors, the P30s ARE directional, they just only face one way. There is only one part number. You may see them listed as L or R but there is only one part number. The direction is correct on the L, but not the R. This is just one of a few ways that the performance pack brakes may not be all they are talked up to be. Yes, they are better than 'the normal' but gains are debatable and have to do with repeated track use, and are negligible on the street. I too have had my RF caliper change color, but interestingly it happened when using after market rotors, which are truly directional, on a day with a lot of track time and several very sharp corners and limited straights. This would be, I believe, that as deadlyvt stated air flow is limited regardless, and with the two piece most of the gains are due to increased surface area vs directional air flow.

AMG is a performance company, but not of a ***** out variety, and they know how 90% of these cars are driven. These are the performance rotors, but again, not of the ***** out variety, as they are meant for guys like me with the occasional track day and not for regular racing. Yes, they could be a true two piece, yes they could be truly directional, but that would cost more and the amount of complaining on here about PP rotor pricing tells you why they didn't go that route. The PP rotors ARE more money, but whether they are expensive or not is relative. I don't think they are pricey compared to some other manufacturers similar products. They are a step up in pricing and performance, and yet not a stratospheric jump up in either department. For those of us who want lighter, truly directional 2 piece rotors there are better, lighter options that in the long run have lower costs than stock due to the ability to reuse the hats and just order the rings. Tal and ACG have some of the best options for this, and I heartily endorse both the quality of the product and Tal/ACG's service.

We can wish AMG had better/more options, but they don't so any discussion of that is gum flapping on our parts. If you want better, the smart choice is to just call Tal and move on. These are non warranty parts and we are free to replace them with anything we choose.

PS. Rear rotors are the same on any package. Again, only one part number.

Wobble64

I see you are a Newbie in this forum. May I politely suggest you read some if there information here? For example the FAQ section has quite a bit of info about tracking the C63, brakes and brake upgrades.
And by clicking on members names you can very easily find out what they drive, and whether they have track experience etc.
So, there is not really any need to 'suppose' any of those things.
For clarity: I calculated the rpm of a wheel for my above post. 2000 rpm corresponds to approx. 80 mph - fair approximation of the average speed we usually drive on a track.

CarHopper

Actually, Wobble has a c63 that has not only seen more track time than the majority of other c63's, and not only is his car set up for the track, but he also has a ton of knowledge (far more than others) when it comes to what it takes to put a c63 on the track effectively.

I'd put your ego aside and listen to the things he says. Same thing with ACG and their advice on brakes. These guys (ACG & Wobble) know what they are doing.

Please don't make this a hostile thread, because it is a great thread. Suppress what other members say or head to private messages to "dish it out" if you have to.

As for your comments on brakes, AMG's, and high performance... A c63 is an out of the box german hot rod for a normal joe shmoe looking for a grin on his face. Those who take advantage of the platform and take their cars to the track (and who expect results) are forced to make some changes. For example, Wobble does not have OEM rotors on his car, for a reason...

Thanks

Wobble64

LOL - thanks PurpleHeartAMG!


gcm747 - where do you live? Maybe we can meet at a track this coming season?

604 C63

Good for you PurpleHeart. I saw this going sideways and just threw some info at it, but you were correct that Wobble64 deserved some support there. He didn't deserve that hostility or those comments, especially when gcm is asking for info, has a single digit post count, and no track record (pun intended) as far as this forum is concerned.

Wobble - you stayed pretty chill there. Nice. I respect, admire and aspire to that. Some days are better than others.

thesaintusa

Do people run ducting to the front rotors on the C63?

I ask because in the RX-7 world (my previous life), this was very common, and extremely effective in helping with dealing with heat. I understand that there is a huge difference in weight between the two cars, but the benefits of ducting would likely also apply to our cars.

Thrilla

Brake ducting will always be helpful for a car seeing extended track time. The C63, as heavy as it is, will definitely benefit from it. The issue will be how to route the ducts since real estate from the front bumper is limited.
Some cars utilize channels in the undertray to guide air to the rotors. Not sure if the C63, or the Black Series utilize this.
Just to add, slotted rotors are directional.

gcm747

OK. I admit it. I was a dick. Some great people offered assistance and I went full stupid. At any rate, I thank all of those who offered assistance based your experience.

604 C63

That's solid. I'm impressed.

Girard@ACGautomotive

Wow this thread went sideways for a minute lol.

Correct, the OEM you cannot service just the rings. MB only offers a full replacement. The girodiscs you can replace the rings and re-use the hubs. Hope that helps

Absolutely. PM Sent.

Girard@ACGautomotive

Quite honestly not many do unless you are willing to fabricate it which we have done for the more serious track car guys.

Wobble64

So, I hope you find answers to what you want to know here (in the Brakes section of the FAQs). If you have questions left, feel free to ask!

604 C63

Quick. Let's join hands and sing Kumbaya. You guys are obviously grown ups.....theres no room for your kind on the internet lol

tphss

Trying to decide on brakes, I have the OEM 2-piece on the P30 package.
Do you know if the Girodisc 2-piece rotors F/R are lighter than the OEM 2-piece?

Thanks