Brake Pads!
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Joined: Dec 2007
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From: Vancouver, BC
2008 Mercedes C300 4Matic
I find usually after i wash my car it's rusted up but then the rust goes away afterwords when I drive it for a bit. I don't know but recently I couldn't wash my car (cause of the snow) but at the same time the snow is probably keeping it rusted 
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From: Europe
223.168 & 213.012 & 906.633 & 214.005
Are you talking about the pads or the discs? The discs are pretty "soft" steel and rust easily if they are left wet for a while. I try to dry my brakes after car wash, it feels like the hand brake was left on (and pushed heavily) if the car is parked for some time after car wash and the pads get "glued" to discs.
You cannot wash the rust away, you can only use your brakes and it goes away. This is all normal by the way.
You cannot wash the rust away, you can only use your brakes and it goes away. This is all normal by the way.
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From: Belgium
S204 C220 CDI, VW Scirocco III 1.4TSI 160
Does the AMG pack provide you Americanos with drilled front discs too?
Sure it looks nice but less mass on those discs means quickers fading Will be replacing mine with "regular" discs. Don't like the cracks and the holes filling up 
Sure it looks nice but less mass on those discs means quickers fading
Will be replacing mine with "regular" discs. Don't like the cracks and the holes filling up
Last edited by ctgilles; Dec 28, 2008 at 05:43 AM.
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From: Seattle
C-300, XC70, Wrangler
If washing the car can cause the brakes to look like rust, then our wet roads must do it too? Is MB hiding a "defect" when they put the brakes on slightly whenever the wipers are running? Hmm .... conspiracy lurks everywhere!
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From: SEATTLE WASHINGTON USA
'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
Ventilated discs
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From: Belgium
S204 C220 CDI, VW Scirocco III 1.4TSI 160
A non-drilled disc will outperform a drilled disc. It's call physics.
And I have drum brakes and no ABS on the Partner. It's murderous
I thought it was standard on most performance oriented cars? Happy it dries the brakes but unhappy that it will give extra wear.
And I have drum brakes and no ABS on the Partner. It's murderous
I thought it was standard on most performance oriented cars? Happy it dries the brakes but unhappy that it will give extra wear.
Last edited by ctgilles; Dec 29, 2008 at 05:13 AM.
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From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
If you are talking about the flash rust on the brake discs, that happens on all cars. It is normal and will grind off very quickly once you begin driving. The caliper metal will likely start showing signs of rust is a few years, especially if you are in an area that salts the roads in winter or if the get scratched enough to break through their coating.
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'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
A revelation
A non-drilled disc will outperform a drilled disc. It's call physics.
And I have drum brakes and no ABS on the Partner. It's murderous
I thought it was standard on most performance oriented cars? Happy it dries the brakes but unhappy that it will give extra wear.
And I have drum brakes and no ABS on the Partner. It's murderous
I thought it was standard on most performance oriented cars? Happy it dries the brakes but unhappy that it will give extra wear.
Perhaps you had better send off an urgent message to every performance and supercar manufacturer on the planet that all the money they spend on braking systems to keep up with their products' performance is wasted.
Just sign it "A guy from Belgium who drives a fleet of pokey diesels, some of which he thinks are performance cars." They'll send somebody over.
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
Efficiency of either should depend upon the application.
ie Performance Driving where a lot of heat is generated Vs Normal sedate driving.
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A very good question . A few answers here :- http://72.14.235.132/search?q=cache:...lnk&cd=1&gl=au
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From: Belgium
S204 C220 CDI, VW Scirocco III 1.4TSI 160
A solid disc contains more mass, therefore it will take longer for that larger mass to warm up (m*Q in thermodynamics).
A drilled disc will cool down faster and get rid of the dust more efficiently.
So, for us "normal people", a solid disc would be better and cause less problems on the road. A grooved rotor is a better option imo, lots of mass and gets the dust away efficiently.
Offcourse, drilled discs on AMGs, Porsches and Ferraris are the best choice when on track. But 90% of normal people never get on a track with their car.
And it's idiotic of MB to fit drilled discs to any C with AMG pack on it. Sure it looks good but it doesn't improve anything other than aesthetics...
And FYI, that "pokey diesel X5" wipes the floor with a BMW Z4. Remap ftw 285bhp!
Last edited by ctgilles; Dec 30, 2008 at 04:08 AM.
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From: Vancouver
C350 4Matic
Since you can only see the edge of a pad, you must be talking about the disc's. And yes ALL cars start to do this after a few days in rain, snow or car wash. Dont worry, it is very normal and your car is fine. If you let a car sit for years, it is also common to find your calipers are stuck. Like someone said just a few pumps of the brakes will remove the rust.
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From: Vancouver
C350 4Matic
I think it would be cheaper for them to use high quality disc then make a system to wipe off water from the pads. So this is no conspiracy. This is the latest of great new technologies that will make all cars safer and better.
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From: Vancouver
C350 4Matic
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From: Walnut Creek, CA
325Ci, 325Cic, C300
High-carbon steel
Rust on rotors is not because they use a non-"high quality disc", but rather just a property of high-carbon steel. This is needed for the specific application of brake rotors of intense heat, abrasion and wear resistance, etc.
Mixing metals is always tricky, particularly with these two properties. On one end you have a "pretty" rotor that looks fabulous but wears easy, and an "ugly" rotor that stands up to wear and abuse. I'm glad most major companies have chosen function over form, as evidenced by the rust that we all see.
Regards,
Paolo
Mixing metals is always tricky, particularly with these two properties. On one end you have a "pretty" rotor that looks fabulous but wears easy, and an "ugly" rotor that stands up to wear and abuse. I'm glad most major companies have chosen function over form, as evidenced by the rust that we all see.
Regards,
Paolo
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From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
I think you misunderstood what I am saying.
A solid disc contains more mass, therefore it will take longer for that larger mass to warm up (m*Q in thermodynamics).
A drilled disc will cool down faster and get rid of the dust more efficiently.
So, for us "normal people", a solid disc would be better and cause less problems on the road. A grooved rotor is a better option imo, lots of mass and gets the dust away efficiently.
Offcourse, drilled discs on AMGs, Porsches and Ferraris are the best choice when on track. But 90% of normal people never get on a track with their car.
And it's idiotic of MB to fit drilled discs to any C with AMG pack on it. Sure it looks good but it doesn't improve anything other than aesthetics...
And FYI, that "pokey diesel X5" wipes the floor with a BMW Z4. Remap ftw 285bhp!
A solid disc contains more mass, therefore it will take longer for that larger mass to warm up (m*Q in thermodynamics).
A drilled disc will cool down faster and get rid of the dust more efficiently.
So, for us "normal people", a solid disc would be better and cause less problems on the road. A grooved rotor is a better option imo, lots of mass and gets the dust away efficiently.
Offcourse, drilled discs on AMGs, Porsches and Ferraris are the best choice when on track. But 90% of normal people never get on a track with their car.
And it's idiotic of MB to fit drilled discs to any C with AMG pack on it. Sure it looks good but it doesn't improve anything other than aesthetics...
And FYI, that "pokey diesel X5" wipes the floor with a BMW Z4. Remap ftw 285bhp!
Although few C Class drivers will ever push their cars hard enough to benefit from the faster cooling of drilled rotors, all of us benefit everyday from the reduced mass of the rotors. This equates to less rotational inertia which improves both acceleration and braking. It is not a large difference but helpful none the less. Kinda ironic that hese big giant brake kits actually slow your car down in more ways than you want...
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From: SEATTLE WASHINGTON USA
'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
Holes
I think you misunderstood what I am saying.
A solid disc contains more mass, therefore it will take longer for that larger mass to warm up (m*Q in thermodynamics).
A drilled disc will cool down faster and get rid of the dust more efficiently.
So, for us "normal people", a solid disc would be better and cause less problems on the road. A grooved rotor is a better option imo, lots of mass and gets the dust away efficiently.
Offcourse, drilled discs on AMGs, Porsches and Ferraris are the best choice when on track. But 90% of normal people never get on a track with their car.
And it's idiotic of MB to fit drilled discs to any C with AMG pack on it. Sure it looks good but it doesn't improve anything other than aesthetics...
And FYI, that "pokey diesel X5" wipes the floor with a BMW Z4. Remap ftw 285bhp!
A solid disc contains more mass, therefore it will take longer for that larger mass to warm up (m*Q in thermodynamics).
A drilled disc will cool down faster and get rid of the dust more efficiently.
So, for us "normal people", a solid disc would be better and cause less problems on the road. A grooved rotor is a better option imo, lots of mass and gets the dust away efficiently.
Offcourse, drilled discs on AMGs, Porsches and Ferraris are the best choice when on track. But 90% of normal people never get on a track with their car.
And it's idiotic of MB to fit drilled discs to any C with AMG pack on it. Sure it looks good but it doesn't improve anything other than aesthetics...
And FYI, that "pokey diesel X5" wipes the floor with a BMW Z4. Remap ftw 285bhp!
BTW, nobody produces drilled discs, to be perfectly accurate. Those holes are all cast in which reduces cracking.
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Joined: Dec 2008
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From: Belgium
S204 C220 CDI, VW Scirocco III 1.4TSI 160
But you can't argue with it's handling. Let's just shut up about the drivers
And the weightloss for those drilled discs (yes, I know it's cast or they'd crack even faster) is zero to nothing. You people are Americans remember, compare it to the extra weight of your body, other rims or even just seat heating or a glass roof...
It's a gimmick.
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Joined: Oct 2008
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From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
It's driven by hairdressers to be correct, when their Audi TT is in the shop
But you can't argue with it's handling. Let's just shut up about the drivers
And the weightloss for those drilled discs (yes, I know it's cast or they'd crack even faster) is zero to nothing. You people are Americans remember, compare it to the extra weight of your body, other rims or even just seat heating or a glass roof...
It's a gimmick.
But you can't argue with it's handling. Let's just shut up about the drivers
And the weightloss for those drilled discs (yes, I know it's cast or they'd crack even faster) is zero to nothing. You people are Americans remember, compare it to the extra weight of your body, other rims or even just seat heating or a glass roof...
It's a gimmick.
You seem upset because RLE makes a comment about posers driving Z4s, but then come back and basically call all "Americanos" fat, performance posers and spoiled with every option...that's hilarious.
Drilled rotors are better for performance, period. How much better is certainly up for debate but that is the case for a great deal of the mild perfomrance mods.
I would say more but my dozen Crispy Cream doughnuts just arrived for breakfast...
Last edited by C300Sport; Dec 31, 2008 at 07:55 AM.
