[PBGF32]

Caveat 1: Yes, I know drilled/slotted are just for looks
Caveat 2: Yes, I know about the M-Performance rotor set

I've looked the internet up and down and can't seem to find a true drilled/slotted set of rotors for the M-sport rears that are 345mm x 24mm. Is that real??

I love the look of a double ground rotor surface and the M-performance coating kind of ruins that. I also feel like the dimples simply aren't as eye grabbing as true drilled holes.

Any suggestions? I see there are true drilled/slotted options for front rotors that measure 340mm x 30mm, but I wonder if used in the rear that the loss of diameter will leave pad material that is untouched. Not to mention any overall shape offset differences between them.

Who's running non-MPB brakes that are drilled and slotted?

[Red_Baron]

https://www.turnermotorsport.com/BMW...w-brake-rotors

https://www.turnermotorsport.com/p-1...-435xi-single/

[PBGF32]

Originally Posted by Red_Baron

https://www.turnermotorsport.com/BMW...w-brake-rotors

https://www.turnermotorsport.com/p-1...-435xi-single/

Thanks, but those have virtually exactly the same qualities as the MPB rotors I'm trying to avoid. Dimpled, not drilled, and coated instead of double ground.

[PBGF32]

Picked up a set from a new company called Brakenetic out of Long Beach. They use the same Centric Premium rotor blanks that Stoptech uses, so it should be a quality part.

http://www.ebay.com/itm/141536355088?ul_noapp=true

These are the only option available in 345mm replacement rotor for M-sport brakes at the moment (drilled/slotted, not MPB). I'll let you guys know how they work out soon.

[Vojta89]

Front (you can choose version - you are looking for Sport Japan):
http://www.tarox.co.uk/product/front...grade-bespoke/

Rear:
http://www.tarox.co.uk/product/rear-...e-sport-japan/

They have also their own brake pads, which reacts best with their own brakes (street use)

[yoandry]

I have the mpb rotors and when they nedd it to be change I'm also looking for a different one as I dont like the sound the make when passing next to the median or walls.

[roll_the_dice]

www.adamsrotors.com He should be able to help.

[PBGF32]

Rotors arrived yesterday, fantastic shipping! I ordered Monday off their eBay listing and they arrived Wednesday afternoon with free shipping. Long Beach CA to Palm Beach FL, that's hard to beat haha.

Quality seems greats so far, install was cake and they share the same e-brake inner design as the factory blanks. I'll update this post with install photos tonight and be able to give some feedback on noise. Did a quick run last night after the install and didn't hear anything abnormal. Definitely no MPB noise.

[DrifterX]

Looking forward to the pics!

[oceanview]

Originally Posted by PBGF32

Caveat 1: Yes, I know drilled/slotted are just for looks

Wrong!

.....The dimple drilled rotor was invented by EBC Brakes back in the 90’s and has been imitated by many because of its ability to offer pad degassing without “Through Drilling” disc or rotor holes which has been shown to promote rotor cracks.

The wide aperture slots on the EBC units actually draw cool air under the brake pad and rotor interface and help cool the temperatures of the pad contact which can shoot up to well over 1000 degrees at the very heart of the brake pad during heavy braking and can cause brake fade or loss of brake effect.

These “Full sweep” slots on the EBC Sport Brake rotor also help remove dirt dust debris and water from the braking area but without doubt the MAIN benefit of such sport rotors is their ability to maintain a flat and parallel pad surface throughout the lifetime of the brake pad set.

Source

And for complete drilled rotors, read this:
https://ebcbrakes.com/articles/dange...rilled-rotors/

My personal experience driving about 8 years now especially with brake behaviour on wet road (heavy rain) conditions and some track days are inline with this statement above. I've had dimple drilled and slotted rotor on my E46 for many years (replacing the original flat rotors) and now with the MPBK on th F31. No fading, no slow brake reaction on whet roads.

But yes I agree, on a daily drive under normal conditions there is no benefit over a flat surface rotor because normally the brakes never get that hot, that degassing is needed. That could be the case when driving downhill for a long time or naturally when you take your car on a track for a few hot laps.

[Bee Pee]

Originally Posted by PBGF32

Rotors arrived yesterday, fantastic shipping! I ordered Monday off their eBay listing and they arrived Wednesday afternoon with free shipping. Long Beach CA to Palm Beach FL, that's hard to beat haha.

Quality seems greats so far, install was cake and they share the same e-brake inner design as the factory blanks. I'll update this post with install photos tonight and be able to give some feedback on noise. Did a quick run last night after the install and didn't hear anything abnormal. Definitely no MPB noise.

OEM is 2 part [steel rotor and alloy hub] and these look like all steel single part - how do they compare weight wise ?

[PBGF32]

Originally Posted by oceanview

Wrong!



Source

And for complete drilled rotors, read this:
https://ebcbrakes.com/articles/dange...rilled-rotors/

My personal experience driving about 8 years now especially with brake behaviour on wet road (heavy rain) conditions and some track days are inline with this statement above. I've had dimple drilled and slotted rotor on my E46 for many years (replacing the original flat rotors) and now with the MPBK on th F31. No fading, no slow brake reaction on whet roads.

But yes I agree, on a daily drive under normal conditions there is no benefit over a flat surface rotor because normally the brakes never get that hot, that degassing is needed. That could be the case when driving downhill for a long time or naturally when you take your car on a track for a few hot laps.

^--- Yeah sorry, that's basically what I was referring to haha My weak commute isn't exactly Laguna Seca, so for what I use them for its basically a cosmetic mod.

[PBGF32]

Originally Posted by Bee Pee

OEM is 2 part [steel rotor and alloy hub] and these look like all steel single part - how do they compare weight wise ?

This is the part where I admit retardation.. I was anal about finding out the weight differences between the factory rotors and the ECS 2-piece up front and then these on the rear. Did I weigh them when I had the chance?? Nope, because I'm an idiot and was distracted with the install haha.

From pure speculation I can say the ECS 2-piece fronts are seemingly lighter by a few lbs and the rears from Brakenetics seemed to be more or less the same weight as stock. The rear hubs on both include the drum section for the e-brake, so it's not exactly a lightweight part to begin with. I'll shoot them a note and try to get the advertised weight spec if they have it handy.

2 Days In - zero noise Black hubs on the Brakenetic's match the ECS 2-piece rotors very well, so it's a good combo to run visually.

[PBGF32]

Originally Posted by DrifterX

Looking forward to the pics!

I didn't get a chance to clean it up for photos yet, tonight though.. haha! Just put on a set of OEM 437M's as well!