E-Class (W211) 2003-2009

Front brake discs

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Old 01-18-2022, 10:20 PM
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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; 01-19-2022 at 04:06 AM.
Old 01-19-2022, 09:20 AM
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Post VIN I will pull MB part # to cross reference.
Old 01-19-2022, 03:51 PM
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2007 W211 E280
Many thanks
VIN: WDB2110542B198601
Old 01-19-2022, 03:57 PM
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Old 01-19-2022, 04:12 PM
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2007 W211 E280
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?
Old 01-19-2022, 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; 01-19-2022 at 04:28 PM.
Old 01-19-2022, 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.
Old 01-19-2022, 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; 01-19-2022 at 10:47 PM.
Old 01-20-2022, 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?
Old 01-20-2022, 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.
Old 01-20-2022, 09:08 PM
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Thanks. Will do. No warnings yet but will replace pads and discs when it arrives.
Old 01-26-2022, 08:05 PM
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@konigstiger Can you crosscheck my vin also for the same topic? WDB2112221B371857
Old 01-27-2022, 09:16 AM
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Old 01-27-2022, 10:02 AM
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@konigstiger Thank you very much, that means I should have the biggest variant with 330 mm diameter.
Old 02-14-2022, 05:48 PM
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@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,
Old 02-15-2022, 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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Old 02-15-2022, 03:46 PM
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@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

Old 02-15-2022, 04:16 PM
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Yes. according to the vendor's link you provided.



Your MB front disc is 295mm:



Old 02-16-2022, 05:52 AM
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Hi @konigstiger could I pls trouble you to check my VIN for brake parts (front and rear)?

VIN: WDB2110612A252738
Old 02-16-2022, 11:14 AM
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Old 02-16-2022, 12:14 PM
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Thanks again for your help. I ordered the kit and will get them installed sooner than later. Best regards.
Old 02-17-2022, 01:12 AM
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Thanks @konigstiger
Old 08-17-2024, 02:36 AM
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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 08-17-2024, 12:36 PM
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"would that with there"? 🤔
Old 08-17-2024, 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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