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Rear pads are due soon and the current stock pads are producing way too much brake dust. Looking to switch to an aftermarket option. From what I read, people are recommending the Porterfield R4S. Also trying to figure out the exact part number for the Porterfields.
Hi everyone,
I'm a newbie to this forum. So pardon the dumb question. Do you guys change rotors every time you change pads?
I measured the front rotor and it's 24mm thick and I see a lip at the outer edge of the rotor.
I typically change rotors with pads on my cars. This is the first time changing pads on my 2015 S63. I picked it up about a year and a half ago with 16K miles on it. It now has 26k miles. I actually drive it ;-)
Cheers,
MO
2015 S63 Coupe
2004 Infiniti FX35
2003 CLK500 Coupe
1986 TVR 280i
Porsche guy who drives SL63 w/ perf pkg AND perf suspension
It seems like these cars burn the rears up faster than the front. I think they have alot of rear bias. As a rule of thumb, I would figure 2 sets of pads before the rotors. But go by your min thickness stamped on the rotor.
So, I just checked and my rotors are still above minimum spec, and not grooved. However, when I run my finger from the inner to the outer part of the rotor, it feels wavy. Is that normal, or should I replace my rotors as well?
I put Powerstop Z23/Z26 on my 18 S63 sedan this past summer. I also changed the rear rotors to the Zimmerman rotors but kept front rotors since they were changed a year ago. Stopping power is exactly the same and brake pedal feel is also the same. I now have what I would say is ZERO brake dust. I was expecting a 90% improvement, but my results have far exceeded my expectations. Z26 pads on the front and I get less brake dust on the front than the rear. OEM machined 10 spoke forged wheels. The difference is like night and day since changin in June/July of this year.
I put Powerstop Z23/Z26 on my 18 S63 sedan this past summer. I also changed the rear rotors to the Zimmerman rotors but kept front rotors since they were changed a year ago. Stopping power is exactly the same and brake pedal feel is also the same. I now have what I would say is ZERO brake dust. I was expecting a 90% improvement, but my results have far exceeded my expectations. Z26 pads on the front and I get less brake dust on the front than the rear. OEM machined 10 spoke forged wheels. The difference is like night and day since changin in June/July of this year.
Carlos are the Powerstop pads making for rotor wear as we see with OEM pads?
I am in the process of installing Powerstop z23 rear brake pads on my car. However, I noticed that all 4 pads do not have the hole for the brake pad sensor to go in, unlike the original mercedes pads. Am I doing something wrong? Pads are Z23-1669
I am in the process of installing Powerstop z23 rear brake pads on my car. However, I noticed that all 4 pads do not have the hole for the brake pad sensor to go in, unlike the original mercedes pads. Am I doing something wrong? Pads are Z23-1669
You're totally fine. There's only 1 front sensor and 1 rear sensor. Funnty thing is I've been working on cars for 40+ years and I have to remind myself of this every time I do a brake job.
Carlos are the Powerstop pads making for rotor wear as we see with OEM pads?
Yes!! There's a really good informative but boring video on Youtube that talks about how brake pads and rotors react with each other. That iterface determines so much that goes on that is never talked about. In a nutshell, under braking, the brake pads lay down a coating on the rotor, and this coating is what determines everything between the pad and rotor; sound, wear, heat dissipation, off gassing, etc. Carbon ceramic pads lay down a coating that leads to far less rotor wear than metallic or OEM type pads. Prior to learning about this, I always thought brake dust was from the pads, but in reality 90% or more of brake dust is from the rotors. Most of the material from the pads is burned away as gas. That why when you combine a Carbon Ceramic pad with a Carbon ceramic rotor you get so little rotor wear.
Last edited by carlosinseattle; Nov 18, 2024 at 11:26 AM.
If you have CCB's then just a rear sensor, if you have regular AMG brakes then there should be a sensor for front and rear. They must have packed the box incorrectly, forgot to include a pad with the notch for the sensor.
Last edited by carlosinseattle; Nov 19, 2024 at 06:21 PM.
Hi everyone,
I'm a newbie to this forum. So pardon the dumb question. Do you guys change rotors every time you change pads?
I measured the front rotor and it's 24mm thick and I see a lip at the outer edge of the rotor.
I typically change rotors with pads on my cars. This is the first time changing pads on my 2015 S63. I picked it up about a year and a half ago with 16K miles on it. It now has 26k miles. I actually drive it ;-)
Cheers,
MO
2015 S63 Coupe
2004 Infiniti FX35
2003 CLK500 Coupe
1986 TVR 280i
Are you talking about rear rotors? 24mm can't be the front thickness. The rear one is 26mm new and 24mm is the minimum. Yes you need to change it. Go with brembo 09B87911
As for front, the new thickness is 36mm and 33mm is minimum. Go with brembo 09931333, better than oem, 2 piece floating design, lighter, cheaper and looks way better.
So I reordered them and this time it came with the hole for the sensor. I guess the previous one I got was defective and they forgot to drill a hole for the sensor. The previous one has a manufacturing date of 2020, and the newer ones I got are from 2024.
Are you talking about rear rotors? 24mm can't be the front thickness. The rear one is 26mm new and 24mm is the minimum. Yes you need to change it. Go with brembo 09B87911
As for front, the new thickness is 36mm and 33mm is minimum. Go with brembo 09931333, better than oem, 2 piece floating design, lighter, cheaper and looks way better.
how are the brembo 09931333 front rotors holding up?
I installed Bembos disc all around with Genuine MB pads on my 2015 S63 coupe.
i am very happy with results.
Dealer quoted me $13.8k !
I have done brakes on all my cars for 30 years. This estimate from the dealer was the highest I have ever seen (I’ve had a number of v8s and biturbo V8 MBs).
by the way, I have not had good experience with aftermarket pads. Many have not fit exactly right. So, I always use original equipment pads and have never had any issues.
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