C55 rear rotors?
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All parts are OEM and are direct bolt-on. My installation advice is DIY if you're comfortable doing brake work, which is not complicated work. Make sure you have a brake bleeder, or have a patient helper if you need to pedal bleed.
One IMPORTANT note: The backing plate needs to be changed, or you can butcher the stock C55 one. Either way, you need to make room for the larger rotor and caliper. In order to change the backing plate, you need to remove the hub flange. You'll need the OEM extraction and insertion tool, plus a bearing kit, as you'll run a 95% chance of damaging the bearing upon removal of the hub.
I came up with a third option, as I'm not too comfortable undoing the factory bearing and hub installation. I had the correct backing plates cut into two pieces by a machinist. Each plate is mounted by 4 bolts, so I had them cut so that each halve would be secured by 2 bolts evenly. I also made sure that I did not cut through any of the high spots that the parking brake shoes rest on. Each half is strong, and the base for the parking brake shoe is not compromised. There are no vibration noise issues.
All parts are OEM and are direct bolt-on. My installation advice is DIY if you're comfortable doing brake work, which is not complicated work. Make sure you have a brake bleeder, or have a patient helper if you need to pedal bleed.
One IMPORTANT note: The backing plate needs to be changed, or you can butcher the stock C55 one. Either way, you need to make room for the larger rotor and caliper. In order to change the backing plate, you need to remove the hub flange. You'll need the OEM extraction and insertion tool, plus a bearing kit, as you'll run a 95% chance of damaging the bearing upon removal of the hub.
I came up with a third option, as I'm not too comfortable undoing the factory bearing and hub installation. I had the correct backing plates cut into two pieces by a machinist. Each plate is mounted by 4 bolts, so I had them cut so that each halve would be secured by 2 bolts evenly. I also made sure that I did not cut through any of the high spots that the parking brake shoes rest on. Each half is strong, and the base for the parking brake shoe is not compromised. There are no vibration noise issues.
do you need the heat shields (backing plates) there at all?
I've called the rep and he said the rear rotors were 300mm and it would be a direct replacement. Any comments ? TIA.
Last edited by 360_iti; Aug 6, 2007 at 03:44 PM.




A decent dealer should sell you the 030 rear rotors for $144 each. Take the money saved and buy the 030 calipers.
At least for the extra money you get 4 pots, and a larger disc.
I ordered oem fronts from oempartsdirect.com, maybe its just me but they seem a tad bit dull.
I think I'm just *****ing a little.
Last pic is the oem front.
Last edited by RiomJ; Aug 26, 2007 at 03:29 PM.



