otakki

Indeed use the left paddle to utilize engine braking. I do it all the time. I have close to 60K miles and pads and rotors are nowhere near needing replacements. Of course, >95% on open highway without traffic helps me a lot, too.

tripitz

My guess is that the rear brakes get used a ton by the stability control. I'm starting to drive around full time in sports handling mode to minimize unwanted braking...

Dthquazi

Are people really having to replace rotors at these intervals? What is wrong with the rotors that they needed to be replaced?

YICS NZ

apparantly the stability control system uses the rear brakes constantly to stop our tail becoming too free

Dthquazi

I got that. I don't see why rotors are being replaced and not just pads. Are the rotors soft and are warping? Are people just replacing them because it is suggested by the dealer? Are they thin and wear quick as well?

YICS NZ

some mechanic believes the rotors need to be replaced as soon as they show signs of wearing - its quite typical to have heat damaged steel rotors for c63 even for the previous generation as the braking power is a little on the high side compared to other cars. Thats why they do ceramic rotors for high performance vehicles for circuit use - frequent braking generates alot of heat and unlike the front, theres no additional ventilation for the rear rotors hence the wear to them and subsequent replacement. Some aftermarket ventilated rotors from trusted brands might be worth investing.

obbob

Does anyone have a good recommendation for an aftermarket brake rotor that gets similar performance but for less money? At $1100 USD a piece I'd rather not have to replace them every 8 track days.

otakki

http://www.girodisc.com/

tekfoc

http://www.autohausaz.com/search/pro...0Brake%20Rotor

tripitz

Thanks! Very inexpensive.

Guilty

I didn't know our rotors were so cheap. What's the catch?

https://www.oediscountparts.com/part...&siteid=215242

Andyroo

Wow! Aren't they $1100 direct from Mercedes?!

Guilty

Yes, this is what I'm trying to figure out!

atl 2 chi

I just replaced my rear pads and rotors at 23,000 miles. I was like, wtf! I figured the front would go first. I was so wrong, $930.00 later for just the rears. Something told me to go aftermarket as I usually do when replacing but the brake indicator came on along the with red brake indicator in the vehicle and I thought something was really wrong with the system. It was already at the "stealership" so I just said, fix it.

SBH-

+1

ive done 35K KM so far without replacing any pads and my service advisor told me that the brakes are still in a very good condition thanks to the paddles

Andyroo

Crazy how conflicting different experiences are! How are some pads disappearing like they're made of sand and others lasting tens of thousands of miles?

SBH-

personally, I hit more highways than driving in the busy city. most of my mileage comes from long routes, which I usually cruise on, hence the minimal use of brakes

Ilfr

I don't think they change the rotors & pads for $930 rotors cost $1000 each at this price you probably got pads only.

atl 2 chi

Gonna go back and look at my invoice. I could have swore they told me both pads and rotors for the the rear at $930.00. I was drinking a glass of Caymus Cabernet when I received the phone call...

550x2

You do realize transmissions are many times more expensive than brakes? Why put extra strain and wear on the clutch packs in the transmission? Brakes are what you use to brake the car not the tranny! And yes your automatic transmissions has clutches in it.

RDOCA

I use engine breaking all the time and it is just as if you have a manual tranny.
The transmission will still shift down thru the gears EVEN if you use the brakes to do all the slowing so why not take advantage of all the good.

I recommend doing it this way and I do have a history of building and racing auto transmissions in one of my race cars.

BallzOne

Breaking the engine all the time must cost a lot of money.

RDOCA

Nobody ever accused me of being an English major.

fixed

Dthquazi

Still not fixed .

It is not the same. You have very little control by doing this. With a manual you control it completely with the release of engagement of the clutch. This is quick and harsh. Plus the clutch on a manual is a wearable part that is quite a bit easier to replace. It is built for that exact purpose. Auto clutches are not.

japamg

So I guess that ceramic brakes are worth it...