E-Class (W211) 2003-2009

Front brake discs

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Old Jan 18, 2022 | 10:20 PM
  #1  
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2007 W211 E280
Front brake discs

Hi
Just had my car serviced. All fluids and filters.
The mechanic did tell me that I'll be due for new brake pads and rotors soon.
I've looked up on DBAs website (supplier here in Australia). See https://dba.com.au/products/catalogue/dba-part-finder/
and there are 3 different sizes for the front rotors. How do I tell which ones to buy? My E280 is a base model - no AMG or Sports. So I'm guessing the 295mm diameter ones.

Last edited by jave808; Jan 19, 2022 at 04:06 AM.
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Old Jan 19, 2022 | 09:20 AM
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Post VIN I will pull MB part # to cross reference.
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Old Jan 19, 2022 | 03:51 PM
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Many thanks
VIN: WDB2110542B198601
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Old Jan 19, 2022 | 03:57 PM
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Old Jan 19, 2022 | 04:12 PM
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Thank you!!

One thing I did notice. The front rotor is 295mm in diameter and the rear rotor is 300mm in diameter. Is this normal?

And do I also need to replace the wear sensors?
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Old Jan 19, 2022 | 04:22 PM
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Yes. Wear sensors determine replacement upon inspection.Although e280 is not listed check here for compatible aftermarket entering MB part #s given: https://www.fcpeuro.com/Mercedes~Benz-parts/

Last edited by konigstiger; Jan 19, 2022 at 04:28 PM.
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Old Jan 19, 2022 | 06:34 PM
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Originally Posted by konigstiger
Yes. Wear sensors determine replacement upon inspection.Although e280 is not listed check here for compatible aftermarket entering MB part #s given: https://www.fcpeuro.com/Mercedes~Benz-parts/
I thought you only needed to replace them if the light telling you to replace the brake pads was on. As it was just the mechanic that told him to replace the brake pads, it sounds like the light isn't on yet. I believe what happens is that when they wear away, the contacts are broken and you get a light. If the contacts aren't worn away, you should be able to reuse them, but depending on how bad they are, they may be slightly worn away already, but not enough to break the contact.

Most of the time when you buy front brake pads like Akebono, they come with the sensors but others might not come with them.
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Old Jan 19, 2022 | 09:27 PM
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Originally Posted by cetialpha5
I thought you only needed to replace them if the light telling you to replace the brake pads was on. As it was just the mechanic that told him to replace the brake pads, it sounds like the light isn't on yet. I believe what happens is that when they wear away, the contacts are broken and you get a light. If the contacts aren't worn away, you should be able to reuse them, but depending on how bad they are, they may be slightly worn away already, but not enough to break the contact.

Most of the time when you buy front brake pads like Akebono, they come with the sensors but others might not come with them.
Thanks. No warning lights - yet! Mechanic did a visual inspection on the pads.

So I've ordered new pads and rotors - front and rear. I feel I will get away with the old wear sensors, but time will tell.

If I did get new sensors, are they the same sensors for left and right? So front left and right the same, and rear left and right the same?

Last edited by jave808; Jan 19, 2022 at 10:47 PM.
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Old Jan 20, 2022 | 08:53 AM
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Originally Posted by cetialpha5
I thought you only needed to replace them if the light telling you to replace the brake pads was on.
Visual inspection of connector/harness should always be done when replacing pads.

Yes was in response to:

Originally Posted by jave808
One thing I did notice. The front rotor is 295mm in diameter and the rear rotor is 300mm in diameter. Is this normal?
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Old Jan 20, 2022 | 09:14 AM
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Originally Posted by jave808
Thank you!!

One thing I did notice. The front rotor is 295mm in diameter and the rear rotor is 300mm in diameter. Is this normal?

And do I also need to replace the wear sensors?
Those sensors are like $3 and they aren't on all 4 wheels.... I'm almost positive it was just 2 (1 F and 1 R). I'd just order them.
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Old Jan 20, 2022 | 09:08 PM
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Thanks. Will do. No warnings yet but will replace pads and discs when it arrives.
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Old Jan 26, 2022 | 08:05 PM
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@konigstiger Can you crosscheck my vin also for the same topic? WDB2112221B371857
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Old Jan 27, 2022 | 09:16 AM
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Old Jan 27, 2022 | 10:02 AM
  #14  
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@konigstiger Thank you very much, that means I should have the biggest variant with 330 mm diameter.
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Old Feb 14, 2022 | 05:48 PM
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2008 e350
@konigstiger Could you provide me with the brake info for my car as well? WDBUF56X78B190654

I need to order parts and not certain what parts and sizes the car needs.

Best regards,
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Old Feb 15, 2022 | 09:11 AM
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If considering MB parts start here to comparison shop: https://www.mbwholesaleparts.com/starparts - view PDF list.





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WDBUF56X78B190654.pdf (67.0 KB, 113 views)
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Old Feb 15, 2022 | 03:46 PM
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2008 e350
@konigstiger thanks! I looked up the parts but it appears some are unavailable. Would a kit like this be compatible with my model? Thank you for your help!

https://www.ebay.com/itm/Front-and-R...-127632-2357-0

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Old Feb 15, 2022 | 04:16 PM
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Yes. according to the vendor's link you provided.



Your MB front disc is 295mm:



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Old Feb 16, 2022 | 05:52 AM
  #19  
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2003 E240
Hi @konigstiger could I pls trouble you to check my VIN for brake parts (front and rear)?

VIN: WDB2110612A252738
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Old Feb 16, 2022 | 11:14 AM
  #20  
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Old Feb 16, 2022 | 12:14 PM
  #21  
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Thanks again for your help. I ordered the kit and will get them installed sooner than later. Best regards.
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Old Feb 17, 2022 | 01:12 AM
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Thanks @konigstiger
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Old Aug 17, 2024 | 02:36 AM
  #23  
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W211 E350
W211 E350 322mm disc swap to 330mm

Hi!

I have a W211 E350 Sport with 322mm front discs. All the local dealers have only 330mm discs available. Would that with there?




VIN: WDB2110561B049228

Thanks!
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Old Aug 17, 2024 | 12:36 PM
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"would that with there"? 🤔
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Old Aug 17, 2024 | 01:31 PM
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Originally Posted by tjts1
"would that with there"? 🤔
Would the 330mm disc fit there or is it too large?

W212 seems to have 322mm discs but not W211🤨
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