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I am curious mostly about t he difference in looks between the two. Can someone post pictures of what a 2 piece rotors looks like vs a one piece? I am trying to see how it would look on the car if I went with a one piece instead of 2? Thanks!
2 piece rotors are just that. The disc separates from the 'hat' whereas the 1 piece are all one assy. They cannot be separated. See red arrow in the attached pic. Orange circles show the hardware that attaches them. You will not be able to see the difference between them once the wheels are mounted on the car
Originally Posted by papashango
What about the rears? I am assuming the pads are probably around $300 for the set of 4?
Closer to $450-500 depending on brand of pad. I just paid $150 including UPS shipping for some Portersfield rear pads
Originally Posted by papashango
And if we change from 2 piece rotors to 1 piece we don't have to change the large red caliper do we?
No the calipers are the same between the C63. models. Only difference is the color
2 piece rotors are just that. The disc separates from the 'hat' whereas the 1 piece are all one assy. They cannot be separated. See red arrow in the attached pic. Orange circles show the hardware that attaches them. You will not be able to see the difference between them once the wheels are mounted on the car
That's the problem with the OEM 2 piece rotors. It's 2 piece by name and design, but they won't sell you the discs alone. You have to buy a whole new hat/disc assembly whenever you have to replace the rotor.
That's the problem with the OEM 2 piece rotors. It's 2 piece by name and design, but they won't sell you the discs alone. You have to buy a whole new hat/disc assembly whenever you have to replace the rotor.
LOL. Sad part is, that is suppose to be one of the benefits. (replacing the outer disc only)
LOL. Sad part is, that is suppose to be one of the benefits. (replacing the outer disc only)
Typical AMG tax. One option is to go aftermarket 2-piece, as most of those guys sell the rings separately. I'm still sort of considering that option, so I lied when I said I'm going to switch to one-piece when the time comes.
Just to clarify the p31 rotors are not technically 2 piece rotors in that the hat cannot be separated from the disc. They are "dual cast," or more like "1.5" piece rotors if you will. The P30 rotors are true two piece rotors.
Anyway, C63 brake pictures to clear up the confusion:
P30 Rotor - Two piece. Part #2194210212, about $900 each. Note the screws that show the hat is separate from the disc. You can't buy just the discs though (thanks Mercedes).
P31 (also 507) Rotor - '1.5' piece. part #2124210512, also about $900. There are no screws and the "spokes" of the hat are cast directly into the disc.
One Piece Rotor found on the vast majority of C63s. Part #2044211212, About $150 each. You can see all the extra mass vs. the p31 rotors, but then again p31 rotors are 6x the price.
Notice that the caliper is the same for all of them, and that you probably can't tell the difference with the wheels on as most of rotor will be covered by the wheel.
Rear brakes are the same on all C63s, part #2044230412, about $200 each.
Last edited by realjones88; 01-22-2015 at 08:35 PM.
Just to clarify the p31 rotors are not technically 2 piece rotors in that the hat cannot be separated from the disc. They are "dual cast," or more like "1.5" piece rotors if you will. The P30 rotors are true two piece rotors.
Anyway, C63 brake pictures to clear up the confusion:
P30 Rotor - Two piece. Part #2194210212, about $900 each. Note the screws that show the hat is separate from the disc. You can't buy just the discs though (thanks Mercedes).
P31 (also 507) Rotor - '1.5' piece. part #2124210512, also about $900. There are no screws and the "spokes" of the hat are cast directly into the disc.
One Piece Rotor found on the vast majority of C63s. Part #2044211212, About $150 each. You can see all the extra mass vs. the p31 rotors, but then again p31 rotors are 6x the price.
Notice that the caliper is the same for all of them, and that you probably can't tell the difference with the wheels on as most of rotor will be covered by the wheel. Rear brakes are the same on all C63s.
Perfect! Thank you for the clarification and pics. Cheapo (if you could call them that) rotors it is for this 507!
i would be shocked if anyone with p31 actually replaced it with p31 rotors (unless they track and could actually feel the difference)
No one can say anything definitive based on a few individual opinions but I think it could easily shake out at 50/50. I know more P30/P31 owners who would stay 2-piece even if it's not the OE version. Visually, IMO:
Top photo = Pure Sex
Middle photo = Meh
Lower photo = Boring
I will try to post a pic of my rotors/brakes here tomorrow so you guys can tell me what I have!! I am even more confused now with p30 and p31 since I thought they were both same. The third one does look quite ugly compared to the other two lol.
I will try to post a pic of my rotors/brakes here tomorrow so you guys can tell me what I have!! I am even more confused now with p30 and p31 since I thought they were both same. The third one does look quite ugly compared to the other two lol.
Just take a look at your hats. If you have bolts, it's two piece. If you have gaps, it's 1.5 piece. If they are ugly, you have one piece. Or, if you have p30 = 2 piece, p31= 1.5 piece, neither= one piece. Unless you are not the original owner and the rotors were swapped out previously. Ok, I guess it is a bit confusing. Lol.
1800 for two front rotors, yea I'll stick to the one piece. they look perfectly fine to me.
900 is blasphemy for steel rotors.
its an AMG, you know going in that parts aren't going to be cheap.
i'll likely buy 2piece when required on my p30 be it aftermarket or oem simply to stick with what came with the car.
and there really is quite a visual difference in that picture, the p30 two piece has a much cleaner look which could come into play depending on your wheels
its an AMG, you know going in that parts aren't going to be cheap.
i'll likely buy 2piece when required on my p30 be it aftermarket or oem simply to stick with what came with the car.
and there really is quite a visual difference in that picture, the p30 two piece has a much cleaner look which could come into play depending on your wheels
yes we all know it's an AMG, doesn't mean I'm willing to **** money away on 18 pound less unsprung weight in which i can't even feel.
Once again, subjective. the one piece looks fine to me.
yes we all know it's an AMG, doesn't mean I'm willing to **** money away on 18 pound less unsprung weight in which i can't even feel.
Once again, subjective. the one piece looks fine to me.
Smart choice! Unless you're planning on tracking the car, you won't feel any of the weight difference for normal driving. The extra money that you save can be better spent on stainless steel break lines or better pads that don't give off as much brake dust.
yes we all know it's an AMG, doesn't mean I'm willing to **** money away on 18 pound less unsprung weight in which i can't even feel.
Once again, subjective. the one piece looks fine to me.
yet everyone always looks for lighter forged wheels, it's all the same principle of reducing weight.
I figure I won't be replacing rotors all the time so i'll opt for the pricer solution without much worry and shop around for a better deal. If i put one piece on i'd end up putting 2 piece back before i sold the car anyway
it's all about choices and thankfully there is an option
yet everyone always looks for lighter forged wheels, it's all the same principle of reducing weight. I figure I won't be replacing rotors all the time so i'll opt for the pricer solution without much worry and shop around for a better deal. If i put one piece on i'd end up putting 2 piece back before i sold the car anyway it's all about choices and thankfully there is an option
+1, but honestly I don't think everyone is looking for lighter wheels, it just may seem that way from various sponsor posts re new light wheels they are offering. But I totally agree, if weight is a consideration, one piece is a no no.
My rotors (disc) are drilled and slotted...can that be had for one piece or would those only be drilled? Cause the combination looks quite good. I forgot to take pictures, will do it after a wash today.
My rotors (disc) are drilled and slotted...can that be had for one piece or would those only be drilled? Cause the combination looks quite good. I forgot to take pictures, will do it after a wash today.
Here's a picture of my brakes looks like it's the p31?? If so I see the brake difference in p30 and p31 posted above. What's the difference in these cars? I always thought they were the same...
01-22-2015, 02:00 PM
