DxbStew

Hi All,

I discovered yesterday the front discs on my W208 CLK55 are thinner than the manufacturers reccommended thickness. The thickness is 28mm instead of the recommended 30.4mm minimum thickness.

I find this very disappointing, as I replaced these only 40,000km ago. I did have them resurfaced 2 years ago, but I would have assumed that Genuine AMG discs would last longer than 40,000km. This is more disappointing since each disc costs $800 each here in Dubai. (yes, the main dealer is a rip off here - the disadvantage of them having exclusive mercedes rights here).

Anyhow, a couple of questions.

1. What are the consequences of driving with the discs thinner than the recommended thickness?


2. Anyone know any good, and less expensive alternatives? And if these alternatives are available in the UAE?
I've done a lot of research into this, but most of the discs that claim to be for the W208 clk5 are smaller in diameter, and thinner than the AMG ones.


The car is my daily driver, with a lot of highway driving. I don't brake hard, so I'm not sure why the discs wore down so quickly. I replaced the pads the same time as the discs, and there's about 5mm left on these, so it appears the discs wear quicker than the pads!

Thanks

FCPEuro

DxbStew,

I offer them for about $210 each, I also have a kit located here that includes pads.

--Kyle

https://www.fcpeuro.com/products/mer...an-w210amgfbk1

DxbStew

Thanks Kyle.

Are there any datasheets for these on your site?

FCPEuro

There are no datasheets on the site, what dimensions are you looking for as I can take measurements for you.

cm60k

FCP is always good choice..,

"W202 C43/W208 Clk55/W210 E55" Rotors should survive more than that..!,

they're (334x32), with (1.5/semi 2-piece Rotors), and light weight,,

can go with alternative drilled or non-drilled OEM Rotors as well, due to little bit costly of "C43/Clk55/E55 Rotors"..

;ZAYED;

DxbStew

You beat me to it Zayed..I was just searching for a diagram showing the dimensions....

Your discs are a good price Kyle. The only problem is that it would cost $300+ to ship to the UAE

DxbStew

Zayed,

Know anywhere in the UAE I can get good discs?

So far, I haven't been able to source any with the correct dimensions.

FCPEuro

I can ship it for $180, if the website quotes you more feel free to PM me and I'll make an adjustment.

KJI3jflarryfe93

your rotors are they genuine HWA rotors that wore down in 40.000kms?
you might not have the original AMG rotors do you?

I still use my factory supplied rotors which are 18 years old and approx 114000kms, they still have plenty of meat left.
I brake like Fred Flintstone, seriously I have PortersField R4S street pads and they are very friendly to my rotors

what pads are you using?
if you run cheap pads with some kind of mixed metal compound they will eat your rotors in no-time!
braking is much better but will give short life on rotors

DxbStew

Both the discs and pads are genuine MB amg parts. I don't know why they wore so quickly, but I suspect the guys that skimmed the discs in 2015 took way too much off. The lip at the top of the rotor now measures 30mm, so they must have skimmed them down to this. At that stage, there was only 10,000km on them, so they were hardly worn. I've done 25000km since then, and the lip at the top of the discs are about 2mms thicker than the rest of the disc, so they've worn 2mm in 25,000km. Most of this 25,000 was highway driving, and no hard braking.

KJI3jflarryfe93

I have a very thin lip on the edge of the rotor which I can feel with my finger nail, that's very little for 114000 km's and 18 years.
that's very odd why shop removed so much meat on your discs with the machine.

the HWA discs are very thick they should last for many years.
next time buy rotor friendly pads.

here you can buy the same pads like mine
http://formymercedes.com/porterfield.asp

cm60k

Dennis,

I'm not surprise about that, life of brakes & almost all components suffering here..!!,

and many things could kill the brakes easily; "climate/way of driving/traffic/damn monsters that forcing you to punish the brakes",

moreover; "hell heat/much humidity/fully dust/many constructions/dirty cars flows around you spitting",,

don't think you have any of these, pls. come here & see it LIVE..

;ZAYED;

KJI3jflarryfe93

sand dunes in UAE must be very hard on your cars.

strong wind with sand particles in the air creaps into every little space in your cars this must cause lots of problems for ya??

cm60k

INDEED..

KJI3jflarryfe93

you must have this facial expression

MarcusF

Brake wear is subjective. Pads can last a half day at the track or years. Whatever you end up with, do not turn the rotors (resurface them) when you change pads. I've never turned them on the Porsche or the Mercedes. Typically, after the second set of pads, my rotors are toast.

If you run rotors that are out of spec, you'll get run-out. Aside from the pulsing pedal, pulling to the side, and cooked fluid (which should be changed every two years), the excess heat is tough on the wheel bearings and caliper seals.

W202AMG

165,500klms on mine, and theyre about how you describe yours.

Still original pads.

My W210 E55 had original rotors still on there at 278,000klms, worn, but still smooth and powerful in operation, no reason to replace.

KJI3jflarryfe93

that's a great testament to the quality of our HWA rotors!

W202AMG

Yeah mate i dont mind paying for these parts when they lasted so long to start with... Replaced my original factory fitted tailshaft couplers today, and they were only just showing minor cracks at 18 years and 165,500klms... £47 each for Febi replacements, which were identical to the originals in every way except the Merc star and 210 part number...

KJI3jflarryfe93

what parts are tailshaft couplers?
where do they sit?

W202AMG

These:

KJI3jflarryfe93

oh, you were talking about the 2x donuts on prop shaft.
it slipped my mind, I must getting old!

I had one of these donuts replaced maybe 2 years ago, they were not worn on my car , due to time and age they are made of rubber and rubber dries out causing rubber cracks.
if these parts are not replaced in good time donuts will shread in the transmission tunnel causing massive damage which is not healthy for our cars

so the febi part you got was stamped with the MB star and a w210 partsnumber.
manufacturer is SGF if i remember correct

W202AMG

Yeah it happened on my C180 after 330,000klms, didnt break anything, but wouldve been close.

Febi part was SGF, but missing the star and the Merc part number. Identical apart from that.

KJI3jflarryfe93

it looks like a stamped MB STAR @ 16.00 hrs in the above picture.
did they grind off the star selling this part as aftermarket?

genuine parts are manufactured in the same factory as aftermarket parts or supplier has different parts shipping out to autoparts stores.
they remove MB stamp placing genuine MB parts in aftermarket boxes.
same thing looks like have been done with your donut?

W202AMG

Yeah that is the original, the Febi ones are both on the car, but no star, and was not ground off.

Ive seen that on lots of parts, the throttle position sensor is one recently, bought a genuine Hella sealed in a Hella box, and it has fine grinding done where the original has a star and a part number.

Water pump is an SKF, but has no indication of any star or part number, original is blank where replacement has SKF logo.