Does anyone know the advantage and disadvantage of new p30/31 rotor
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C63 w/p30; MHP ECU tune+header+mids+CF air intake duct+Akrapovic+wide body kit+ Vorsteiner VS110
Does anyone know the advantage and disadvantage of new p30/31 rotor
I just got the picture of new p30/31 rotor.
Does anyone know the advantage anf disadvantage of the new design comparing with old p30 two piece rotor?
It seems no weight reducing(13.7kg/30.2 lb) v.s. old p30 rotor.
Does anyone know the price for it in US? As far as I know, the old p30 rotor is USD 1000/ piece.
Thanks for help in advance!
Does anyone know the advantage anf disadvantage of the new design comparing with old p30 two piece rotor?
It seems no weight reducing(13.7kg/30.2 lb) v.s. old p30 rotor.
Does anyone know the price for it in US? As far as I know, the old p30 rotor is USD 1000/ piece.
Thanks for help in advance!
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From: Houston, TX
2009 C63 with Eurocharged tune and charcoal delete
Had this discussion a couple months ago and the general concensus was that they are cheaper for Benz to build but not neccessarily any better than the old style. This is just a guess, not sure if anybody really knows, but it is a little strange that virtually all high-end supercars run two-piece rotors. Only other car I have seen with the new style one-piece rotors is the Audi R8.
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From: Houston, TX
2009 C63
The new P30/P31 rotors are not one piece rotors as stated above. They are “dual cast” two piece Brembo rotors like the ones found on the current generation CTS-V. More information can be found in the link.
http://www.brembo.com/US/Cars/Dual-Cast/
http://www.brembo.com/US/Cars/Dual-Cast/
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From: Houston, TX
2009 C63 with Eurocharged tune and charcoal delete
The new P30/P31 rotors are not one piece rotors as stated above. They are “dual cast” two piece Brembo rotors like the ones found on the current generation CTS-V. More information can be found in the link.
http://www.brembo.com/US/Cars/Dual-Cast/
http://www.brembo.com/US/Cars/Dual-Cast/
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2009 C63
I am happy that I could help.
Personally, if I were going to upgrade rotors I would go with the Evosport two piece rotors. They are lighter than either of the OEM two piece rotors. Also, they appear to be manufactured by the same people who built my two piece UUC rotors for my previous generation CTS-V. Here is a link for reference to the rotors I had on the V. They are strikingly similar to the rotors Evosport offers.
http://www.uucmotorwerks.com/CTS-V_f...ors/index.html
The funny thing is that while both my previous V rotors and the C63 rotors are nearly the exact same size, I only paid about $800 for the V/UUC front rotor set.
Personally, if I were going to upgrade rotors I would go with the Evosport two piece rotors. They are lighter than either of the OEM two piece rotors. Also, they appear to be manufactured by the same people who built my two piece UUC rotors for my previous generation CTS-V. Here is a link for reference to the rotors I had on the V. They are strikingly similar to the rotors Evosport offers.
http://www.uucmotorwerks.com/CTS-V_f...ors/index.html
The funny thing is that while both my previous V rotors and the C63 rotors are nearly the exact same size, I only paid about $800 for the V/UUC front rotor set.
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C63 w/p30; MHP ECU tune+header+mids+CF air intake duct+Akrapovic+wide body kit+ Vorsteiner VS110
The new P30/P31 rotors are not one piece rotors as stated above. They are “dual cast” two piece Brembo rotors like the ones found on the current generation CTS-V. More information can be found in the link.
http://www.brembo.com/US/Cars/Dual-Cast/
http://www.brembo.com/US/Cars/Dual-Cast/
But if I have any further questions, where/who I can ask help from? For example, I don't quite understand how the new design can achieve the same level of "floating effect" of old two-piece-rotor? Is the cast iron "harder" than aluminium so the deformation of aluminium becomes the buffer?
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2013 f250 6.7 diesel
Evosports are the way to go
I am happy that I could help.
Personally, if I were going to upgrade rotors I would go with the Evosport two piece rotors. They are lighter than either of the OEM two piece rotors. Also, they appear to be manufactured by the same people who built my two piece UUC rotors for my previous generation CTS-V. Here is a link for reference to the rotors I had on the V. They are strikingly similar to the rotors Evosport offers.
http://www.uucmotorwerks.com/CTS-V_f...ors/index.html
The funny thing is that while both my previous V rotors and the C63 rotors are nearly the exact same size, I only paid about $800 for the V/UUC front rotor set.
Personally, if I were going to upgrade rotors I would go with the Evosport two piece rotors. They are lighter than either of the OEM two piece rotors. Also, they appear to be manufactured by the same people who built my two piece UUC rotors for my previous generation CTS-V. Here is a link for reference to the rotors I had on the V. They are strikingly similar to the rotors Evosport offers.
http://www.uucmotorwerks.com/CTS-V_f...ors/index.html
The funny thing is that while both my previous V rotors and the C63 rotors are nearly the exact same size, I only paid about $800 for the V/UUC front rotor set.
Last edited by dodger63; Dec 15, 2010 at 07:54 PM.
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Thanks a lot and learn a lot, too!
But if I have any further questions, where/who I can ask help from? For example, I don't quite understand how the new design can achieve the same level of "floating effect" of old two-piece-rotor? Is the cast iron "harder" than aluminium so the deformation of aluminium becomes the buffer?
But if I have any further questions, where/who I can ask help from? For example, I don't quite understand how the new design can achieve the same level of "floating effect" of old two-piece-rotor? Is the cast iron "harder" than aluminium so the deformation of aluminium becomes the buffer?
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I'm trying I think I only have 5 days left... But thanks.. I used an improper word on the forum but I did the trick were I put ! In between the sh and the rest of that word so..
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Floating rotors are designed to allow the rotor to expand radially outward as the rotor heats up. If you look at the cross section CAD drawing on the Brembo link as the rotor heats up and expands, it will move away from the hat in the center. At the joint where the rotor and the hat are connected, the hat is actually cast around the inward pointing stubs of the rotor. This joint will act as a slip joint allowing the stubs to move inward and outward while maintaining contact on the sides of the stub for heat transfer.
Several issues need to be clarified here.
1. Since the hat is actually "cast around" the inward pointing stubs of the rotor, the connecting surfaces of both part are stuck/bound together tightly, right!
2. When the the rotor heats up and expands, the inward stubs should expand toward to center of hat. Am I right? PLS see the attached PDF file.
3. Since aluminum is softer than cast iron, the deformation on the hat will be more as the floating effect provider. Am I correct?
Add another picture for closer look of this new design.
Last edited by C63fan; Dec 17, 2010 at 03:49 AM.
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2009 C63
Thanks again!
Several issues need to be clarified here.
1. Since the hat is actually "cast around" the inward pointing stubs of the rotor, the connecting surfaces of both part are stuck/bound together tightly, right!
2. When the the rotor heats up and expands, the inward stubs should expand toward to center of hat. Am I right? PLS see the attached PDF file.
3. Since aluminum is softer than cast iron, the deformation on the hat will be more as the floating effect provider. Am I correct?
Add another picture for closer look of this new design.
Several issues need to be clarified here.
1. Since the hat is actually "cast around" the inward pointing stubs of the rotor, the connecting surfaces of both part are stuck/bound together tightly, right!
2. When the the rotor heats up and expands, the inward stubs should expand toward to center of hat. Am I right? PLS see the attached PDF file.
3. Since aluminum is softer than cast iron, the deformation on the hat will be more as the floating effect provider. Am I correct?
Add another picture for closer look of this new design.
2. The inward stubs would expand toward the middle, but the rotor, a ring, would expand at a higher rate(it is larger, so it will have more thermal expansion). When a ring under goes thermal expansion, both the inner and outer radii increase. The net affect will be that the stubs will move away from the hat, because the inner radius expands at a greater rate than the stubs. I could not get the file to open for some reason.
3. Yes the deformation of the hat should provide some floating effect.
I would like to make a note that I am note claiming that these work better than a standard two piece floating rotor. I am claiming that they work similarly.
Last edited by TexasEngineer; Dec 17, 2010 at 10:46 AM.
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Very interesting from a technical point of view, but I have to say that I still like the looks and proven performance of the old two-piece floating rotors (EvoSport style) that are still used on most ultra-high-performance cars. And since the new design doesn't really reduce the weight I am going to stick to my theory that the new design is mainly being evolved because it's easier to manufacture. Looks like it can all be done by machine without having to manually fasten the hats to the rotors, hence saving the annual salary of some italian guy at Brembo who has been there for 25 years and makes too much money.
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On UUC's website, they have quite a few products developed for EvoSport for M3 application. Therefore, i won't be surprised if EvoSport C63 rotors were also developed by UUC.
Does someone want to talk to UUC about this?
Does someone want to talk to UUC about this?
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None fast enough!
STOP!
Nothing EVER was developed by UUC for evosport.
UUC copied many of our designs for many products! So much so, one owner even tracked down and visited one of our manufacturing facilities once and asked for them to just make our products with their name (many years ago). This has been WELL discussed on many BMW boards and email lists by the way.
UUC products are not sold or even installed in our shop (even if you bring it in). Too many issues and problems and UUC ownership ALWAYS blames the install. lol
This is very serious what you wrote, please get the facts straight on this. I could not be insulted more!
thanks
brad
Nothing EVER was developed by UUC for evosport.
UUC copied many of our designs for many products! So much so, one owner even tracked down and visited one of our manufacturing facilities once and asked for them to just make our products with their name (many years ago). This has been WELL discussed on many BMW boards and email lists by the way.
UUC products are not sold or even installed in our shop (even if you bring it in). Too many issues and problems and UUC ownership ALWAYS blames the install. lol
This is very serious what you wrote, please get the facts straight on this. I could not be insulted more!
thanks
brad
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I would never compromise on brakes, wheels or tires to safe a few dollars.
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From: Houston, TX
2009 C63
STOP!
Nothing EVER was developed by UUC for evosport.
UUC copied many of our designs for many products! So much so, one owner even tracked down and visited one of our manufacturing facilities once and asked for them to just make our products with their name (many years ago). This has been WELL discussed on many BMW boards and email lists by the way.
UUC products are not sold or even installed in our shop (even if you bring it in). Too many issues and problems and UUC ownership ALWAYS blames the install. lol
This is very serious what you wrote, please get the facts straight on this. I could not be insulted more!
thanks
brad
Nothing EVER was developed by UUC for evosport.
UUC copied many of our designs for many products! So much so, one owner even tracked down and visited one of our manufacturing facilities once and asked for them to just make our products with their name (many years ago). This has been WELL discussed on many BMW boards and email lists by the way.
UUC products are not sold or even installed in our shop (even if you bring it in). Too many issues and problems and UUC ownership ALWAYS blames the install. lol
This is very serious what you wrote, please get the facts straight on this. I could not be insulted more!
thanks
brad
Just to be clear, I am in no way advocating for UUC. Also, I believe the rotors offered by Evosport are the best available for the C63. I also believe they are the same exact rotors I had on my CTS-V. I just want to know where they really come from.
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From: Houston, TX
2009 C63
The best price is not always the best deal. Especially when it comes to brakes. Having all that power is sure nice, but having brakes you can trust and rely on, is more important. I for one, wouldn't want to find out what it feels like to be a passenger because of brake failure.
I would never compromise on brakes, wheels or tires to safe a few dollars.
I would never compromise on brakes, wheels or tires to safe a few dollars.
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None fast enough!
Just curious, who actually manufactures these rotors? Who designs them? I am not talking about taking measurement to spec out the hat and rotor size. I am talking about who actually did the engineering and designing for these rotors. What exactly did UUC copy? When you say “our manufacturing facilities” do you own the facility? Are they a partner or a subsidiary?
Just to be clear, I am in no way advocating for UUC. Also, I believe the rotors offered by Evosport are the best available for the C63. I also believe they are the same exact rotors I had on my CTS-V. I just want to know where they really come from.
Just to be clear, I am in no way advocating for UUC. Also, I believe the rotors offered by Evosport are the best available for the C63. I also believe they are the same exact rotors I had on my CTS-V. I just want to know where they really come from.
Like most all businesses, we outsource much of our work. We have a full fabrication facility in house, however, for production items, they are sourced out to production houses. One such house is where UUC arrived and asked the owner to take our BMW pulleys and put their name and sell them to him.
As far as the rotors, we do the process in house along with our manufacturer. We examine the vehicle and the available disc options. This is limited by fitment with stock calipers. We then select and machine the rotors and hats and assemble with the highest quality fasteners.
The raw discs that others use, including UUC, may be from the same maker, however, the complete product is not, that I know for certain.
thanks
brad
