snowmuch

I have recently changed to Akebono Euro brake pads and have noticed that both my front rotor has a rust color ring around it. Any idea why is it?

J__

thats normal. Unless you have ceramic rotors like on some exotics, they will rust. The only reason your rotor surface doesn't rust is because your brakes are rubbing the surface. If you spray water on your rotor during a car wash and leave your car undriven for 2 days, you'll see the rust starting to form. As soon as you drive it and apply the brake, the rust will be gone again. It's normal, don't worry

snowmuch

I've been driving my car for a week already since my brake pad change, I'm worried that the installer didn't install the pads correctly

Doanster

Interesting indeed. The pad should wipe the entire surface of the rotor, pretty close to the edge. If both front rotors are like that, then it may just be that the Akebono pads have more of chamfer on the edge vs other pads? There's really no way to install the pads incorrectly since everything is a snug fit. Well, at least you'd have other clear signs such as rattling/grinding if they were installed incorrectly.
Many others are running with Akebono pads, so hopefully they'll chime in to confirm or deny. Which specific pads did you buy/have installed?

kevink2

I doubt the installer made a mistake, unless he specified the pads ... then it's possible he made a mistake, but it may not matter much.

Their are benefits to doing it yourself, like matching the rubbing surface of old vs new pads. If this "rust ring" is new to you, then the new pads have less radial distance to the installed outer pad radius, vs the old ones, which likely have a better (larger) center of pressure.

But this subtle difference may not be significant, unless you track the car and use full lock.

.

J__

is it possible that you purchased the wrong pads? Maybe got the regular w204 size, AMG has bigger disks.

snowmuch

I have the c300 sports Canadian model which shares the same brake as c350 so I got the c350 brake pads from akebono

Doanster

Just post the exact part number to confirm...

snowmuch

EUR1342

Acapulco Bill

Looks like the smaller size pad, so you are now losing maybe 5% of your stopping power?

xXHotelCrazyXx

Def looks like the wrong pads. The rust you are seeing is simply from water getting on the rotor and not being rubbed off from the pad.

snowmuch

Does anyone have a c350 with akebono can verify this?

Doanster

Not sure about Canadian vs US models, but Tire Rack says an '09 C300 Sport uses EUR1340, not 1342.

snowmuch

Its been confirmed by other members on this forum, I also called my local dealer who alwasy serviced my car before the purchase

Big Daddy

Your rotor appears worn too. Looks as though its due for replacement

DanielQuoc

I just had my break pad changed and mine does not look like that... something is not right for sure.