Rear Brake Dust - Page 2 - Mercedes-Benz Forum
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post #11 of 98 (permalink) Old 09-02-2008, 09:52 PM
glw
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Yes, the weight transfer to the front during braking is pretty obvious. What some have been told at dealership is that the traction control works via rear brakes, resulting in more brake dust on rear wheels. Nobody here seems to be sure so far.
i'm no physics wizard but it doesn't seem like much of a stretch to believe that the same engineers that came up with a brake drying system that automatically applied the brakes lightly when a sensor detected rain can come up with a dynamic braking system that applies only the rear brakes during light braking and then added the fronts during heavier or extended braking.
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post #12 of 98 (permalink) Old 09-02-2008, 10:11 PM
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i'm no physics wizard but it doesn't seem like much of a stretch to believe that the same engineers that came up with a brake drying system that automatically applied the brakes lightly when a sensor detected rain can come up with a dynamic braking system that applies only the rear brakes during light braking and then added the fronts during heavier or extended braking.
Anything is possible. Eventually we will find out the reason.

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post #13 of 98 (permalink) Old 09-03-2008, 08:17 AM
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I buy into the air flow distribution around wheels providing greater ventilation in the front than rear theory. Observation: after a car wash, when the wheels are still slightly wet, I notice residue accumulates more on the rear panel behind the wheel well than on the front. This likely means that the wheel offset combined with the body design contributes to a reduction in air turbulence around the rear wheel not too different than having a diffuser that concentrates airflow underneath the vehicle to exit directly out the rear.

I tried to make all that bs sound really scientific. How'd I do?
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post #14 of 98 (permalink) Old 09-03-2008, 09:16 AM
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I buy into the air flow distribution around wheels providing greater ventilation in the front than rear theory. Observation: after a car wash, when the wheels are still slightly wet, I notice residue accumulates more on the rear panel behind the wheel well than on the front. This likely means that the wheel offset combined with the body design contributes to a reduction in air turbulence around the rear wheel not too different than having a diffuser that concentrates airflow underneath the vehicle to exit directly out the rear.

I tried to make all that bs sound really scientific. How'd I do?
Don't forget the gravitational pull combined with the mini-vortex wind patterns.

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post #15 of 98 (permalink) Old 09-03-2008, 10:25 AM
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More likely (in my mind) that MBz decided to change the rear pads to wear out at the same time as the fronts to make more money in the service bay.

On my w203 it seems like the rear pads outlast the fronts 2 to 1. Poor dealer can't make money...
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post #16 of 98 (permalink) Old 09-03-2008, 10:52 AM
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if youve ever drove a new c class you can tell that the rears do more stopping than the front. i thought it was weird to. bt i talkd to the MB dealership i bought my from and my friend owns and they told me its normal and nothing is wrong.
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post #17 of 98 (permalink) Old 09-03-2008, 11:09 AM
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if youve ever drove a new c class you can tell that the rears do more stopping than the front. i thought it was weird to. bt i talkd to the MB dealership i bought my from and my friend owns and they told me its normal and nothing is wrong.
Right, I've driven the new C-class for thousand of miles and haven't noticed the rears do more stopping than the front. That's amazing.

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post #18 of 98 (permalink) Old 09-03-2008, 01:19 PM
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My understanding is that the rear brakes are applied first or "more" in normal driving to prevent nose dive. In panic or hard braking the fronts would obviously be applied harder to prevent the rear from overtaking the front.
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post #19 of 98 (permalink) Old 09-03-2008, 01:57 PM
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Wow, this is all so (un) scientific, but it's certainly fun to speculate.

If I remember, I will ask my SA/Asst Mgr/certified master tech at the dealership.

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post #20 of 98 (permalink) Old 09-03-2008, 02:37 PM
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Wow, this is all so (un) scientific, but it's certainly fun to speculate.

If I remember, I will ask my SA/Asst Mgr/certified master tech at the dealership.
I'm pretty sure I'm right though.
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