SL/R231: AMG Brake caliper question.
Thread Starter
Junior Member
Joined: Jul 2025
Posts: 31
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2x 2013 r231 SL550
AMG Brake caliper question.
So I acquired a second SL550 2013 and my first one had the 19" AMG wheels and the grey "Mercedes Benz" silk screened logo on them. Well this second SL550 I acquired has these hideous looking raw calipers and they are slightly smaller and had aftermarket 18" wheels on it. I have since got a hold of the AMG 5 spoke 19' wheels but I have to either paint the calipers or get some used, Larger calipers and front rotors as they look a little smaller too.
If you didn't order the car with the AMG wheel upgrade, did it come with raw finish calipers? Is the larger Calipers and rotors a direct bolt on if I find a set of used ones on eBay?
Thanks everyone.
Ryan
If you didn't order the car with the AMG wheel upgrade, did it come with raw finish calipers? Is the larger Calipers and rotors a direct bolt on if I find a set of used ones on eBay?
Thanks everyone.
Ryan
MBWorld Fanatic!
Joined: Feb 2021
Posts: 1,419
Likes: 739
From: Nor-Cal
2020 GLC300 -2014 Sl550 - 1997 SL600
So I acquired a second SL550 2013 and my first one had the 19" AMG wheels and the grey "Mercedes Benz" silk screened logo on them. Well this second SL550 I acquired has these hideous looking raw calipers and they are slightly smaller and had aftermarket 18" wheels on it. I have since got a hold of the AMG 5 spoke 19' wheels but I have to either paint the calipers or get some used, Larger calipers and front rotors as they look a little smaller too.
If you didn't order the car with the AMG wheel upgrade, did it come with raw finish calipers? Is the larger Calipers and rotors a direct bolt on if I find a set of used ones on eBay?
Thanks everyone.
Ryan
If you didn't order the car with the AMG wheel upgrade, did it come with raw finish calipers? Is the larger Calipers and rotors a direct bolt on if I find a set of used ones on eBay?
Thanks everyone.
Ryan
Standard brakes for non-AMG cars - bead blasted/raw finish: front: 342mm x 32mm vented, 320mm x 24mm unvented
U28 Sport package for non-AMG engined cars - Painted with MB Text: front: 360mm x 36mm vented, 320mm x 24mm vented
B06 Standard for AMG cars : front: 390mm x 36mm vented, 360mm x 26mm vented
B07 Carbon-Ceramic for AMG cars : front: 402mm x 39mm carbon, 360mm x 32mm carbon
All brakes packages for the R231 are pretty much bolt on and interchangeable.
Good Luck
B06 AMG Brakes and 471 AMG LSD installed!
Last edited by crconsulting; Sep 7, 2025 at 08:30 PM.
Thread Starter
Junior Member
Joined: Jul 2025
Posts: 31
Likes: 17
2x 2013 r231 SL550
Those AMG 6 pistons look really good on there! Love it!
I have one quick question. So I just now bought the U28 painted calipers on ebay and got an excellent deal. Will I be able to use the 342mm x 32mm rotors that are on it now or do I need to get the 360x36 rotors as well?
Thanks so much for your advice!
Ryan
I have one quick question. So I just now bought the U28 painted calipers on ebay and got an excellent deal. Will I be able to use the 342mm x 32mm rotors that are on it now or do I need to get the 360x36 rotors as well?
Thanks so much for your advice!
Ryan
Thread Starter
Junior Member
Joined: Jul 2025
Posts: 31
Likes: 17
2x 2013 r231 SL550
Was able to pickup a nice set of used U28 Painted front calipers for less than what the Brembo 360mm Rotors cost me!
I wonder if it is possible to put the old calipers and rotors from the front on to the rear!
I wonder if it is possible to put the old calipers and rotors from the front on to the rear!
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Junior Member
Joined: Aug 2023
Posts: 26
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From: El Cajon / San Diego
2015 sl550 Designo
No but the sport rear, which are drilled are the exact dimensions as the standard non drilled rotore, , about $30 more from Rock Auto.
Order them and you'll end up with drilled rotor front and rear. .
Order them and you'll end up with drilled rotor front and rear. .
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