54K miles - Needs All New Rotors 10K after the Last Set? - Mercedes-Benz Forum
 
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post #1 of 6 (permalink) Old 03-11-2019, 05:53 PM Thread Starter
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54K miles - Needs All New Rotors 10K after the Last Set?

Hi Everyone,

Brought my 2015 S550 (just purchased in August 2018 44K miles) into the dealer for its service. I am glad I prepurchased the maintenance X3. It was a certified preowned car with one owner.
All looked good on the carfax at the time of purchase. I noticed they had installed new brakes and rotors on all wheels and thought everything was good.

So, during this service I asked them to look at the brakes as the car was pulsing when coming to a stop. They did as requested and informed me they would be replacing all rotors again under warranty as they should not have needed to be replaced after they just installed new rotors only 10K miles ago (just prior to me purchasing the car).

So, my question to the group is - has anyone else had trouble with Mercedes brake rotors on the S550? Is this a common issue or an anomoly?

Regards,
MM
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post #2 of 6 (permalink) Old 03-20-2019, 09:15 AM
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Did they tell you that issue with the rotors? Did they warp? I can't imagine these calipers would be seizing up already resulting in excess heat warping the rotors. Not to mention you'd feel a sticking caliper as the car would pull you in one direction or another.

Seems like an anomaly to me. I'm sure the dealer used OEM parts, but I suppose it's not impossible for even those parts to have defects.

Luckily it's all being replaced under warranty, but I would definitely monitor it closely to make sure nothing else is amiss.

Do you do a lot of spirited driving? Lots of hard braking/accelerating?

I'm going to assume no, but it never hurts to ask!

'85 Euro 190E 2.3-16
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'15 G63 AMG
'97 Jeep Wrangler Sport
'98 Dodge Durango SLT+ 5.9L Magnum V8
'96 Ford F350 7.3 PSD

~Josh
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post #3 of 6 (permalink) Old 03-20-2019, 02:50 PM
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This Stoptech / Centric technical white paper does a great job explaining the cause of brake pulsation, and how to avoid uneven pad material transfer and cementite formation after installing new rotors.
https://www.apcautotech.com/getmedia...c-8-2018_1.pdf

Here are our rotors for 2015 S550 RWD: https://www.autohausaz.com/catalog/c...tor?s=d&page=1
And for the AWD model: https://www.autohausaz.com/catalog/c...tor?s=d&page=1
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post #4 of 6 (permalink) Old 03-28-2019, 10:12 PM
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Originally Posted by 0benstefa1 View Post
Hi Everyone,

Brought my 2015 S550 (just purchased in August 2018 44K miles) into the dealer for its service. I am glad I prepurchased the maintenance X3. It was a certified preowned car with one owner.
All looked good on the carfax at the time of purchase. I noticed they had installed new brakes and rotors on all wheels and thought everything was good.

So, during this service I asked them to look at the brakes as the car was pulsing when coming to a stop. They did as requested and informed me they would be replacing all rotors again under warranty as they should not have needed to be replaced after they just installed new rotors only 10K miles ago (just prior to me purchasing the car).

So, my question to the group is - has anyone else had trouble with Mercedes brake rotors on the S550? Is this a common issue or an anomoly?

Regards,
MM
Welcome to the forum.
Please click 'User CP' top right to complete your profile with car mod and location (at least State or Country. With W222 at least you are in the right forum).
Mercedes Benz made different versions of same model cars for different parts of the world. On a international forum, the inclusion of your car model/chassis helps elicit responses from members when advice is needed, location helps to make that information relevant to you.
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post #5 of 6 (permalink) Old 04-03-2019, 03:22 AM Thread Starter
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ALL

Thank you for the help and information. I had no idea there was so much going on with brake pads and brakes in general. To answer a question about spirited driving. In Houston its hard to find a location to
large enough to drive in an aggressive manor.

The exception would be on a long empty highway in West Texas were one might exceed he 85 MPH limit..

Also, I have updated my profile. Thank youfor the great discussion and information/help.

Regards,
MM
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post #6 of 6 (permalink) Old 04-03-2019, 09:29 PM
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Ah, yes, Houston appears to always be bumper-to-bumper these days no matter the time of day.

'85 Euro 190E 2.3-16
'84 Euro 500SE
'51 Euro 170S
'15 G63 AMG
'97 Jeep Wrangler Sport
'98 Dodge Durango SLT+ 5.9L Magnum V8
'96 Ford F350 7.3 PSD

~Josh
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