Shop told me I must use 2 piece rotors only?
Thread Starter
Super Member
Joined: May 2017
Posts: 900
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From: Toronto
2012 C63, 2014 E550
Shop told me I must use 2 piece rotors only?
Called a store for a brake job quote and they took my vin. Called me and told me there is “no solid rotors” for my car and it’ll be like $4000 for the brake job.
I thought our P30 cars were 1.5 piece which is replaceable with the much cheaper 1 piece rotors? So by 2 piece does he actually mean 1.5?
I thought our P30 cars were 1.5 piece which is replaceable with the much cheaper 1 piece rotors? So by 2 piece does he actually mean 1.5?
Thread Starter
Super Member
Joined: May 2017
Posts: 900
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From: Toronto
2012 C63, 2014 E550
I’d give him the benefit of the doubt. Whatever system he entered my vin into probably only listed the “2 piece” rotors. They probably just don’t know that it’s downgradeable
so just to clarify once again:
2 piece = 1.5 piece?
1.5 piece replaceable with 1 piece or “solid rotors”?
so just to clarify once again:
2 piece = 1.5 piece?
1.5 piece replaceable with 1 piece or “solid rotors”?
Last edited by NotABaller; Jun 28, 2018 at 12:08 PM.
Senior Member
Joined: Jan 2018
Posts: 415
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From: Whitehouse Station, NJ
2012 C63 P31 Sedan
The "2-piece" term is used interchangeably between the older P30 true 2-piece and the newer co-cast 2-piece rotors, which actually are 2 pieces, but are not separable. All the rotors for these cars are interchangeable except for the Black Series.
Personally, I wouldn't bother with the newer co-cast 2-piece rotors. I'd either go 1-piece if I'm trying to save cash, or go with the older P30, true 2-piece rotors from FCP Euro, where you can buy the pair for $900 and replace them indefinitely with FCP's lifetime replacement warranty. I will be doing the latter option this summer.
Personally, I wouldn't bother with the newer co-cast 2-piece rotors. I'd either go 1-piece if I'm trying to save cash, or go with the older P30, true 2-piece rotors from FCP Euro, where you can buy the pair for $900 and replace them indefinitely with FCP's lifetime replacement warranty. I will be doing the latter option this summer.
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Joined: Aug 2011
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From: Kitchener, ON
2010 C63 AMG
The 2, 1.5 & 1 piece rotors place the rotor surface in the exact same spot and all interchangeable.
The difference in all 3 are basically just how the rotor surface is attached to the hat.
The difference in all 3 are basically just how the rotor surface is attached to the hat.
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From: Worldwide
2007 Mercedes E63 AMG
he must not be an MBWorld member. he isn't necessarily wrong, but he isn't 100% right either. can't really blame him honestly. you can buy replacement rotor rings and hardware if you search the forums if you want to go that route, but going with a 1 or 1.5 is probably cheaper.
Thread Starter
Super Member
Joined: May 2017
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From: Toronto
2012 C63, 2014 E550
he must not be an MBWorld member. he isn't necessarily wrong, but he isn't 100% right either. can't really blame him honestly. you can buy replacement rotor rings and hardware if you search the forums if you want to go that route, but going with a 1 or 1.5 is probably cheaper.
what other hardware is needed for 1 piece rotors?
I was was planning on getting
2 front rotors + pads
2 rear rotors + pads
2 sensors
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You probably want new rotor retaining screws, mine were corroded so needed new ones anyways. I think, though don't quote me, but some of the bolts attaching the caliper are one time use. Oh and some anti-squeal on the pads. Actually, check with FCP Euro, I can't remember but when I purchased my true 2-piece Brembo rotors, I think they included new retaining screws. Cheers
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MBWorld Fanatic!
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'10 C63
ECS tuning has kits. FCP Euro does as well. I have heard nothing but good things about both. FCP Euro allows you to turn in worn pads and rotors for new ones FREE though.
https://www.ecstuning.com/b-genuine-...0421201207kt2/
Depending on how old all of your hardware is, you might get something like this as well.
https://www.ecstuning.com/b-genuine-...00042151741kt/
https://www.ecstuning.com/b-genuine-...0421201207kt2/
Depending on how old all of your hardware is, you might get something like this as well.
https://www.ecstuning.com/b-genuine-...00042151741kt/
Super Member
Joined: May 2011
Posts: 883
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From: Vancouver
2018 e63s edition 1
You probably want new rotor retaining screws, mine were corroded so needed new ones anyways. I think, though don't quote me, but some of the bolts attaching the caliper are one time use. Oh and some anti-squeal on the pads. Actually, check with FCP Euro, I can't remember but when I purchased my true 2-piece Brembo rotors, I think they included new retaining screws. Cheers
Edit : I just asked him about it as I'm actually heading there for tires today and he said the new rotors we put on didn't have holes for them. So there's my answer I guess.
Last edited by ShaneN.; Jun 28, 2018 at 02:18 PM.
Is fhaf rotor retaining screw necessary? I had my front discs replaced a couple months back and for some reason they left them off. Can't remember why he said but he didn't replace them.
Edit : I just asked him about it as I'm actually heading there for tires today and he said the new rotors we put on didn't have holes for them. So there's my answer I guess.
Edit : I just asked him about it as I'm actually heading there for tires today and he said the new rotors we put on didn't have holes for them. So there's my answer I guess.
Thread Starter
Super Member
Joined: May 2017
Posts: 900
Likes: 113
From: Toronto
2012 C63, 2014 E550
ECS tuning has kits. FCP Euro does as well. I have heard nothing but good things about both. FCP Euro allows you to turn in worn pads and rotors for new ones FREE though.
https://www.ecstuning.com/b-genuine-...0421201207kt2/
Depending on how old all of your hardware is, you might get something like this as well.
https://www.ecstuning.com/b-genuine-...00042151741kt/
https://www.ecstuning.com/b-genuine-...0421201207kt2/
Depending on how old all of your hardware is, you might get something like this as well.
https://www.ecstuning.com/b-genuine-...00042151741kt/
800 USD all-in seems like a good deal, hope ECS ships to Canada... Have a link for the FCP Euro one? I googled but couldn't find the package for Front + Rear.
Junior Member
Joined: Jun 2018
Posts: 16
Likes: 1
From: BOS MA
C63 AMG W204
i picked up 2p w PP from ebay
https://www.ebay.com/itm/Set-of-2-Br...ally+Aspirated
way cheaper and brembro ( i think) made the original 2 p brake rotors
https://www.ebay.com/itm/Set-of-2-Br...ally+Aspirated
way cheaper and brembro ( i think) made the original 2 p brake rotors
Senior Member
Joined: May 2017
Posts: 482
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From: Las Vegas, NV
2014 C63 Coupe
Those retaining screws are primarily used at the factory to keep the rotor from falling off before they get the rest of the braking system installed. They frequently rust in place and require an impact screwdriver to remove. I’ve never replaced them when doing rotors.
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Joined: Sep 2016
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From: NY
2010 C63 2019 GLA45
Maybe this is a good place to ask:
Do you guys know if the 1.5 piece rotors of the P31 are floating rotors?
The 2 piece are.
Floating rotors are the best remedy for knock-back.
I have a Brembo GT kit on my Subaru. I bought a replacement kit of friction rings for $600.
Where I am going is that the Brembo distributors may have a friction ring with the McLaren nuts kit and it may not be that bad.
Also the Mercedes parts literature separate calipers, pads for the 2 piece. I didn't check the 1:.5.
This doesn't mean that the rotors cannot be swapped.
Do you guys know if the 1.5 piece rotors of the P31 are floating rotors?
The 2 piece are.
Floating rotors are the best remedy for knock-back.
I have a Brembo GT kit on my Subaru. I bought a replacement kit of friction rings for $600.
Where I am going is that the Brembo distributors may have a friction ring with the McLaren nuts kit and it may not be that bad.
Also the Mercedes parts literature separate calipers, pads for the 2 piece. I didn't check the 1:.5.
This doesn't mean that the rotors cannot be swapped.
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Joined: Sep 2005
Posts: 3,165
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C63 AMG P30 *EuroCharged*| Porsche Cayenne | Buell XB9SX
Originally Posted by Vladds
Maybe this is a good place to ask:
Do you guys know if the 1.5 piece rotors of the P31 are floating rotors?
The 2 piece are.
Floating rotors are the best remedy for knock-back.
I have a Brembo GT kit on my Subaru. I bought a replacement kit of friction rings for $600.
Where I am going is that the Brembo distributors may have a friction ring with the McLaren nuts kit and it may not be that bad.
Also the Mercedes parts literature separate calipers, pads for the 2 piece. I didn't check the 1:.5.
This doesn't mean that the rotors cannot be swapped.
Do you guys know if the 1.5 piece rotors of the P31 are floating rotors?
The 2 piece are.
Floating rotors are the best remedy for knock-back.
I have a Brembo GT kit on my Subaru. I bought a replacement kit of friction rings for $600.
Where I am going is that the Brembo distributors may have a friction ring with the McLaren nuts kit and it may not be that bad.
Also the Mercedes parts literature separate calipers, pads for the 2 piece. I didn't check the 1:.5.
This doesn't mean that the rotors cannot be swapped.
Senior Member
Joined: Jan 2018
Posts: 415
Likes: 109
From: Whitehouse Station, NJ
2012 C63 P31 Sedan
It's a little more than holes in the hat; I believe the outer iron ring is cast first, then placed into a mold where they cast the hat out of aluminum which interlocks with iron "ring". Basically, you get the lightweight properties of a 2 piece rotor, with reduced production costs since you don't need hardware or labor for assembly.
The trade-off is that the rings can never be replaced, and it is't a floating design.
It's funny, because when you understand the reason why they made the co-cast version, it becomes very clear that they should be far cheaper than the 2-piece P30, but clearly someone's making serious cash on them.
The trade-off is that the rings can never be replaced, and it is't a floating design.
It's funny, because when you understand the reason why they made the co-cast version, it becomes very clear that they should be far cheaper than the 2-piece P30, but clearly someone's making serious cash on them.
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Joined: Feb 2010
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
I think the co-cast rotors are floating. They float, at least to the extent that they allow for the difference in contraction and expansion rates of the different metals that are used in their construction.
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
MBWorld Fanatic!
Joined: Sep 2005
Posts: 3,165
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C63 AMG P30 *EuroCharged*| Porsche Cayenne | Buell XB9SX
Originally Posted by BalanBro
It's a little more than holes in the hat; I believe the outer iron ring is cast first, then placed into a mold where they cast the hat out of aluminum which interlocks with iron "ring". Basically, you get the lightweight properties of a 2 piece rotor, with reduced production costs since you don't need hardware or labor for assembly.
The trade-off is that the rings can never be replaced, and it is't a floating design.
It's funny, because when you understand the reason why they made the co-cast version, it becomes very clear that they should be far cheaper than the 2-piece P30, but clearly someone's making serious cash on them.
The trade-off is that the rings can never be replaced, and it is't a floating design.
It's funny, because when you understand the reason why they made the co-cast version, it becomes very clear that they should be far cheaper than the 2-piece P30, but clearly someone's making serious cash on them.
Senior Member
Joined: Jan 2018
Posts: 415
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From: Whitehouse Station, NJ
2012 C63 P31 Sedan
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Posts: 447
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From: Toronto
Present: 2019 C43 Estate
I went with the Racing Brake kit: https://www.racingbrake.com/Mercedes.../mb-irk-18.htm
Got the kit shipped to Lewiston and drove down to pick it up. Even with exchange, the entire kit for all 4 corners with pads ended up being less then just 2 new 1.5 piece rotors.
Got the kit shipped to Lewiston and drove down to pick it up. Even with exchange, the entire kit for all 4 corners with pads ended up being less then just 2 new 1.5 piece rotors.
