marcmaddox

Fronts, I assume...? I'm gonna say the R1's are pretty close, maybe even heavier. They appear very well made--the castings look solid, not porous and the machining looks very good. Oh, and the hat is painted black. I feel my option is valid, I was in New car service and parts for about 25 years....I've seen my share of brake rotors and kinda developed a niche for spotting quality (and junk) castings.

viren.89

The question is, for people who have never dragged their cars or ever will , are we going to notice the weight savings at all ? or this is just in our minds?

AKnight55

10 pounds per corner. Yes

viren.89

How is it going to be different ? I mean how does the car feel any better ?

Toadster

Unsprung weight (google it) - ie dead weight not carried by the suspension

A good example is to push a full wheelbarrow and then push it with 10 less pounds on it. It's less effort to get the lighter one moving...

I did this on my prior Mazda 6 and dropped about 12lbs per corner - the car felt like it gained 50hp and handling improved even more :-)

djrabbi

finally got them on.

oem- 38.9lbs
zimmerman- 35lbs

amazon sent me rear rotors which is why they were light

djrabbi

I painted the hats gunmetal so hopefully no rust.

Toadster

Those look pretty nice! What was the right amazon part #?

allenjdmb

on the subject...is the akebono the pad of choice? I would just like some better street feel ABD less dust...whereto buy them? Thanks for the info...

thumper823

seems to be the most popular, they are on amazon.

djrabbi

Akebono pads are good, not good as OEM. I think we all can agree OEM pads create LOTS AND LOTS of dust.

Amazon ones were correct but they sent me these first and need to return wrong ones back tomorrow.

marcmaddox

Ok, I just weighed the R1 Concepts "Premium" rotors....

Front: 34.2 lbs
Rear: 21.2 lbs.

Toadster

so that saves ~4lbs off the front - not too shabby

cij911

For a given style of rotor (eg 1 pc) I would be concerned how a one rotor would be 4 lbs lighter than OEM. Remember that MB, Porsche, and other OEMs take brakes very seriously and spec out the components to ensure they hold up to the task at hand. My guess is the less expensive and lighter rotors use a cheaper metal and may not hold up as well. The cost for the 1pc MB rotors is about the same as the aftermarket and I would highly recommend sticking with the MBs.

Now, if you can, upgrade to an e63 or racing brake setup and get the weight savings the proper way .

viren.89

They have listed that they use Carbon Material in the manufacturing process- I'd assume that's where the weight saving in coming from.

I'm talking about the Premium series.
http://www.r1concepts.com/p-168413-p...ke-rotors.aspx

but 2.3 times the price - if the OEM is indeed at 100 a pop.

Zimmerman doesn't have considerable weight savings to make a switch but this one provided ~4 LBS per corner.

So is it worth it ? Well, I don't think we have a true review anywhere on the forum. Either people went with OEM or the really expensive options. No middle ground here

viren.89

Oh an old thread! My bad

TheVazha

Anyone got source for REAR rotors??

amg_w211

If going OEM or similar, try FCPEuro.com

I've purchased OEM and OE parts from them. Lifetime warranty and great prices. Free shipping:

Here's some brake rotor options from them, including OEM:

http://www.fcpeuro.com/Mercedes~Benz...06&m=20&e=1087

They offer genuine MB, Myele, OP Parts, and Balo. I can't comment on the quality of the 3 non-MB brands, but FCPEuro has a pretty solid warranty. Personally, I'd go genuine. The prices for the fronts are great, but for the rears...

Here's another shop (RMEuropean) selling the rears (used to order parts for my BMW; although I bet FCPEuro would easily price match; Free shipping; no lifetime warranty with RMEuropean however):

Genuine MB
http://www.rmeuropean.com/Part-Numbe..._5C1313F8.aspx

Zimmerman
http://www.rmeuropean.com/Part-Numbe..._CB19E9EB.aspx

TheVazha

Good Karma to you sir!

cm60k

Hey Ravi,

Sexy purple caliper, love that color..,,

Excellent hat gunmetal painted...

ZAYED,,

RacingBrake

RacingBrake light weight two piece rotors:

Front: 24 lbs vs. OE 36 lbs - Save 12 lbs per rotor.

Rear: 15.5 lbs vs. OE 21.5 lbs - Save 8 lbs per rotor

Total weight saving per car: 40 lbs (35%).

Aside from weight saving and its advantage, RacingBrake two piece rotors are built with the best metallurgy, and can last 3/4 times longer than OE and other aftermarket one piece rotors, also save you gas bills so over the time of your ownership RB two piece rotors would cost less.

A review from ML62 owner installing RB two piece rotors provides factual data in fuel economy resulting from the rotor weight reduction.

https://mbworld.org/forums/ml55-amg-...on-thread.html

allenjdmb

This looks like a great option and I'm getting close on my fronts. But my real question is: has anyone found anything (rotor, pad, SS lines, etc) that improve the pedal feel on the SBC brakes? I do wish I didn't have to apply so much pedal pressure, and a little more "grab" at pedal onset....thoughts anyone, or another thread to point me to? Thanks...

cnterline

I have front and rear racing brake rotors 03 SL 55 difference in handling ,stopping is same if not better,haven't been to the track yet for 1/4 mile comparison yes they are$$$

allenjdmb

but need more info...brand, where can I buy them, what pads, how much? Thanks....