ryad32

Hey Gents,

My c55 has been sitting for a while and the front rotors are corroded with a layer of surface rust. While driving it, I tried braking hard to get rid of the build-up but it didn't work. Also, when breaking the car shakes quite a bit as a result of the condition of the rotors. Any advice on how to get rid of the corrosion (trying to avoid buying a new set of rotors).

Any input/advice is really appreciated.

Thanks,

R

cm60k

little braking vibration could cause from some thick rust in differ places, or pads surface not equal thick, or caliper piston not giving enough pushing,

if Rotors & pads in good condition, then try to clean them with brake cleaner or get-off the rust by using grinder with polycarbide wheel,,

it depends how thick of rust..!

this page may help:-

https://www.youtube.com/results?sear...orroded+rotors

ZAYED,,

ItalianJoe1

You need to have the rotors resurfaced to remove the rust and make them true again. It's cheaper at this point to just replace them, they can be had quite reasonably at many online vendors

insame1

I bet you could have them turned for less that $250-$300. That's for fronts rotor s only too.

amgen

Bad bushings can cause vibrations during braking too.

ItalianJoe1

Centric rotors are $50/ea so assuming you're paying more than $20/ea to have them turned, labor is the same, I'd spend the little extra and start with brand new rotors that will have more life left. But for me brakes are always a priority, a lot of people don't seem to care so much.

insame1

I don't know where you are getting a deal like this. I can find rears for 55 but front no less than 86 and that is for cheap ones. I would have them turned or bight the bullet and cough up the $150 each for something with a little higher quality.

ItalianJoe1

http://www.rockauto.com/catalog/more...nid=543&jpid=3

$52/ea for the drilled ones, a little less for the non-drilled. I guess call it $60 with the shipping. Still not much more than having them cut and not worth the difference IMO.

swedepat

Too bad it´s expensive shipping and risk for tax and toll.
I can resurface discs for penny´s
About $30 each, if they´re unbolted from car, anybody with higher price is a ripoff(in sweden anyway).

There´s no big job this (Make my living att ABB turning stuff in an cnc lathe all day)
Taking me about 1.5hrs to complete four discs.
makes a decent dollar for the hour.

Just a funny note, In Las Vegas at this very time, they´re installing new transformators to ensure powerfeed.
Guess who´s been turning all the flanges and stuff?

ryad32

Hey All,

Thanks for all your input. I put 50 miles or so on the car over the past couple days and with some normal/heavy breaking the rotors are now clean with no surface rust, however I still have some vibration when I break.

amgen (or anyone) - may you please elaborate on the bushings that may possibly be causing the vibration. I had a shop check my rotors and pads and they have plenty of life left on them.

Thanks, gents!

R

amgen

When I changed my front rotors (AMG) I asked my tech to check front bushings. He changed 2 per side (the one showed in the picture and another
one to the left) and told me that worn bushings often result in vibrations when braking.
I did an alignment after that, which was necessary.