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I've had a 2008 C63 for almost 4 years now and love it (I have put over 50k miles on the car in that time and had very minor issues). Time has come to upgrade, but I find myself coming right back to another C63, though this time to the facelifted 2012+ models, possibly a coupe.
The one thing that worries me is that it seems like a lot of the cars for sale are performance/development package cars, which seem to use the two piece rotors. I have read the stories of $3000+ brake jobs on these brakes, but also remember the single piece rotors coming back with stories of similar prices (for comparison I just have my rear rotors and pads replaced with factory parts for $650). Are the two piece rotors really that much more expensive than the single piece rotors?
I don't track my car, so I wouldn't really need the weight savings, but 481 sounds nice compared to 451 hp (though I would be tuning this car anyways). I like the idea of improved engine internals as well. I just don't like the idea of having brakes that cost twice what my first car.
If two piece rotors really are that much more expensive than single piece, then is it possible to use the stock single piece on a P30/31 car?
I love the M156, it really has me hooked and I can't believe just how reliable it has been for me. I've had more issues with Ford engines at lower miles (don't get me started on my mother's VW engine issues).
The P30 (2008-2009) two-piece rotors are ~$1100/ea. They were then replaced with "1.5 piece" rotors for the P31 (2010-2014). These are ~$700/ea. Many members have either gone with aftermarket options (which vary all over the place), or substituted the "standard" rotors for ~$200/ea. Pads are same for all cars.
The P30 (2008-2009) two-piece rotors are ~$1100/ea. They were then replaced with "1.5 piece" rotors for the P31 (2010-2014). These are ~$700/ea. Many members have either gone with aftermarket options (which vary all over the place), or substituted the "standard" rotors for ~$200/ea. Pads are same for all cars.
Thanks for the reply. So standard 1 piece rotors will fit on the P30/31 cars then? That helps widen my search.
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, C5 Z06 & IS300 race cars, EQE 4Matic+ on order
Originally Posted by gometz
Thanks for the reply. So standard 1 piece rotors will fit on the P30/31 cars then? That helps widen my search.
Correct. If the performance gain of lowering the unsprung weight is not a primarly concern, you can simply substitute the steel rotors instead of the fused two piece ones and save a few $. Before you go that route though, I would urge you to check what proper two-piece aftermarket rotors from Racing Brake woudl cost you - I suspect that they are a tad more expensive than the steelies, but probably cheaper than the OEM P30/P31 front rotors.
And, I just saw a set of the OEM P30 (true 2 piece) new front rotors for sale here that were IMHO reasonably priced (the rears are steel and reatively inexpensive).
... and yes, you can also use them in place of the fused 2-piece ("1.5 piece") rotors on the P31 cars. Seeing as they're OEM Brembos, I don't anticipate any annulus hardness differences between these and the MB branded ones. However, for track use the "1.5 piece" or RB rotors will in theory expand and contract somewhat more evenly as both sides of the the annulus are connected to the hat.
... and yes, you can also use them in place of the fused 2-piece ("1.5 piece") rotors on the P31 cars. Seeing as they're OEM Brembos, I don't anticipate any annulus hardness differences between these and the MB branded ones. However, for track use the "1.5 piece" or RB rotors will in theory expand and contract somewhat more evenly as both sides of the the annulus are connected to the hat.
... and yes, you can also use them in place of the fused 2-piece ("1.5 piece") rotors on the P31 cars. Seeing as they're OEM Brembos, I don't anticipate any annulus hardness differences between these and the MB branded ones. However, for track use the "1.5 piece" or RB rotors will in theory expand and contract somewhat more evenly as both sides of the the annulus are connected to the hat.
Ooh, thanks for the link! I'm foolish enough to think the unsprung weight savings are worth it, and planned upgrading my P31 1.5 rotors to the true two-piece. This is easily the best price I've seen for these.
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, C5 Z06 & IS300 race cars, EQE 4Matic+ on order
Originally Posted by nobbyv
Ooh, thanks for the link! I'm foolish enough to think the unsprung weight savings are worth it, and planned upgrading my P31 1.5 rotors to the true two-piece. This is easily the best price I've seen for these.
You're NOT foolish to recognize the performance difference... quite the opposite!
I wish we could get carbon ceramic rotors... the biggest advantage with those is not the heat soak and fade reistance, but rather the weight saving - those things would probably shave off another ~10 lbs per corner. With the tires, wheels and rotors it's not just unsprung weight, it's rotational intertia, so removing ~40 lbs from the rotating wheel assemblies would roughly correspond to a 10x or ~400 lbs weight loss from the body of the car in terms of the performance gain (available grip) on a track. That is massive.
You're NOT foolish to recognize the performance difference... quite the opposite!
I wish we could get carbon ceramic rotors... the biggest advantage with those is not the heat soak and fade reistance, but rather the weight saving - those things would probably shave off another ~10 lbs per corner. With the tires, wheels and rotors it's not just unsprung weight, it's rotational intertia, so removing ~40 lbs from the rotating wheel assemblies would roughly correspond to a 10x or ~400 lbs weight loss from the body of the car in terms of the performance gain (available grip) on a track. That is massive.
So just double checking, if you can put regular rotors on the p30/p31 cars then I can put the FCPEuro 2pc rotors above on my non p31 because their website said not compatible.
So just double checking, if you can put regular rotors on the p30/p31 cars then I can put the FCPEuro 2pc rotors above on my non p31 because their website said not compatible.
Correct, you can mix and match however I cannot write the app guides as compatible because it would be technically incorrect
Originally Posted by solekeeper
thanks for posting that fcp link. looks like a very well organized website, solid pricing also. will look to them for future needs.
The website is definitely a work in progress but I appreciate the compliment. I'm working to make it as easy to navigate and accurate as I possibly can.
This memorial holiday FCP is running a 10% off orders over $199 promotion. You can use the code in the banner on checkout meaning rotors would cost $465 each. This is the lowest we have ever offered the rotors for and keep in mind these items include free shipping, lifetime replacement warranty and unlimited returns. Have a safe holiday
04-20-2016, 09:21 AM
