I have this issue also, usually at around 40mph and decreasing. Had new brakes and discs added. All AMG/Merc ones. Just got tyres changed and alignment done, still juddering! Can someone please advise as MB will undoubtedly refuse to accept the issue is theirs. Vehicle is 4 years old with 53k on the clock

 

Got dealership to change my brakes, the juddering stopped but started up again two weeks later. its also below 40. As time goes by it will start to go to higher speeds as the disc wears out. I believe something is not aligned and the discs are getting a "Run-out" Unacceptable for a mercedes.

 

Additional weight of the run flat tires and it also throws the alignment out. I replaced my run flat tires with regular tires and had alignment done and my car drives like a S class now. Absolutely love driving my car now. Just did a one way 544 mile nonstop road trip

 

which run flats did you have and which did you replace with? also, what made you ultimately swap them out? were you just unsatisfied with the ride quality?

 

I had the Continental run flat tires and hated the harsh ride. After 17,000 miles in 22 months driving like a grandfather my Luxury model needed front tires

I replaced them with 4 new Bridgestone Quiet Track non run flat tires and had alignment done. Car drives like a dream. Tires come with a 80,000 miles warranty. I couldn’t be happier and it cost me what I would have paid for replacing 2 of the Continental run flat tires.

I purchased a 3 ton floor jack and placed that under my trunk with a full size spare in my trunk. I had changed my original rims with aftermarket then I used one on the run flat tires from the rear that was still good so no additional cost there. I am alone in my car 99% of the time so loosing trunk space doesn’t matter to me

I also had purchased wheels and tires warranty and canceled that. It was prorated for 2 years. The money I received covered everything with a couple hundred to spare so made sense for me. Car drives like a S class now and I couldn’t be happier

 

this brake judder remains a complete mystery to me.
as advised before they changed the discs twice and since then i have not had any problems anymore.
but last Sunday i was driving for about 30 minutes when all of a sudden in started again.
however, when i drove back home later that day all was well again & still is.
you tell me…???

 

Hi did you manage to have that problem fix? I have my disc replace twice and problem is back again

 

Hi - eventually yes.

long story but Mercedes finally identified it was an issue with the wheel refurb process. I bought a new wheel and not had issue since in over a year. Of course, the original dealer wouldn't accept blame but, the car is sorted.

My local dealer said it was an issue on other refurb wheels as well on other models so could be to blame.for your ongoing issue.
Hope this helps!
Dean

 

I had aftermarket rims and was told I had two bent ones. I replaced them with the OEM rims and still had the issues. They then determined it was the rear rotors after they had replaced the front ones. I am happy driving the car again

 

Hi i had change my tires change for non run flats wheels alignment done new discs and pads problem came back after 4 weeks is 2 times car has been checked by MB and still same problem.

 

im telling you, its the worst Benz i had so far, if the next generation of classes, like the 2021 C class, E , S, doesn't fix all these issues and start really driving and feeling like a benz again - I am going to leave the brand.

 

Somebody mentioned a while back that going through the car wash and getting the brakes wet is what was blamed for damage to the rotors and the brakes. I can believe it. I notice after I'd gone through the car wash and then parked the car the auto emergency brake applies to the rear wheels and the next time I drive the car the pads are frozen stuck to the rotors and the car makes a heck of a noise when you try to pull forward as the brake pads become detached from the rotors. The car wash is a 5 mile drive home so you'd think that would be enough to dry off the calipers brakes and rotors, nope. So my solution from now on since where I park the car in my garage is flat I leave the Electronic E brake off at least for that one night after parking it after I've gone through the car wash. I could tell if I didn't do anything I was gonna end up with damage to the rear brakes. That sticking effect did not sound very healthy for the rear brakes. To leave the e brake off you turn the car off and turn the ignition to the on position without starting the car and pull the e brake lever and when you turn the ignition off again the e brake will not be engaged. I would not suggest doing this if you park on an incline as it would not be healthy for you're trans or the car could break loose and pose a safety risk.

 

I was the one who mentioned the car wash situation. That was a costly issue which I have never seen on any other MB or other manufacturer.

 

my theory would be a very high metal content in the brake pads and they are corroding to the rotors overnight after going through the car wash the day before. The interesting thing is it only seems to happen when I get the upgraded car wash with the extra chemicals. When I get the regular car wash which is just soap and water the brakes seem fine the next day. Something is not reacting well with the brake pads or calipers after the car wash and making them stick. Infact it actually probably is the calipers and not the brake pads that are sticking the more I think about and then some brake pad residual is left on the rotors and cakes up causing the vibrations.

 

It's not just car washes. I get it after very rainy days in the NYC area.

Do you guys think that swapping to a different pad resolves the issue?

 

for me it started within days after they had been replaced without any water/rain being involved.

 

Correct, excess water and not driving enough to dry the brakes, calipers and rotors.

 

Now that’s interesting to say the least.

 

as stated before and in other threads; they replaced mine 4 times.
sometimes it came back immediately & sometimes after several months

 

nothing is going to fix the problem. its just bad engineering... is my opinion at least haha

Even the fact that we are blaming it on car washes and rain is absurd! they are giving us the run-around

 

Try not using the ebrake and see what happens. Had my car washed yesterday and no e brake last night and no problems today.

 

i never used the ebrake once in 24k miles...just as a reference point

 

on top of that i have a indoor garage and i personally never washed the car during the 24k miles... only like 5 times when it has been in service for like 5 times for a month each! This car is killing me. only a year left now on the lease.

 

The ebrake is applied automatically. Although if your having a problem with the front brakes the e brake would have nothing to do with it as e brake is just the rears. 21 k miles on my wagon so far and pads look like new and no pulsating rotors. I guess I got lucky.

 

I've never had an issue with (lightly used) brakes. The pads are very lightly worn according to the last inspection. The car has been in service 2 years 4 months with about 10k miles of 100% city driving.