Alcon BBK via Bimmerworld or AP Racing Pro 5000R?

[VAC_M3]

Originally Posted by MaX PL

No you're not the only one. My front drivers paint is all gone on my Alcon. Was almost entirely gone after one track day. My passengers front is almost fully gone as well.

The rears are somewhat holding on after 6 events but the front paint is toast.

Bimmerworld said Alcon will take them back for repaint but I'm not sure it's worth it if it'll just happen again.

The paint on my Nickle plated alcons also came off after one track day. Whatever didn’t come off I removed to make it look “better”…. Slightly disappointed with that. I was thinking about getting some caliper paint and painting the alcon lettering myself.

[leftfootbr8king]

Originally Posted by VAC_M3

The paint on my Nickle plated alcons also came off after one track day. Whatever didn’t come off I removed to make it look “better”…. Slightly disappointed with that. I was thinking about getting some caliper paint and painting the alcon lettering myself.

It's likely a substrate issue. If you don't scuff up the nickel plated substrate where the lettering is, most paint is going to have a tough time sticking.

[omgzirra_exe]

all fixed? lol swapped the rotors... hehe

[tsk94]

Disappointed to hear the white lettering will disappear after a day

The stock blue Brembo's turned green on us after 1 day LOL.

[omgzirra_exe]

just thought id share this, the bbk was suppose to come with anti-rattle clips per bimmerworld website, so i would check for those! i did reach out to bimmerworld and they did confirm they are suppose to come with the kit as an optional install, but i didn't get anything.

[SYT_Shadow]

Originally Posted by omgzirra_exe

just thought id share this, the bbk was suppose to come with anti-rattle clips per bimmerworld website, so i would check for those! i did reach out to bimmerworld and they did confirm they are suppose to come with the kit as an optional install, but i didn't get anything.

The antirattle clips are on the rotor/hat interface. Not the caliper. Just pointing it out

[omgzirra_exe]

Originally Posted by SYT_Shadow

The antirattle clips are on the rotor/hat interface. Not the caliper. Just pointing it out

hmmm guess i miss read then? lol i was going to order them, but it said it was an "optional" install with the kit.

i should sleep.. its been 30 something hour since ive been awake..

[SYT_Shadow]

Originally Posted by omgzirra_exe

hmmm guess i miss read then? lol i was going to order them, but it said it was an "optional" install with the kit.

i should sleep.. its been 30 something hour since ive been awake..

If you have no antirattle clips between the rotor and hat then you definitely want the kit.

In the latest two nickel kits the rotors came with them preinstalled, but that's because I tried the original alcon kit on the CS years ago and then had to order the antirattle kit separately

Get some rest!!

[e92BMW///M3]

Even on the track the anti rattle clips are a must have in my book. Besides the additional time during a pad swap (minimal) my understanding is there isn’t any downside.

[omgzirra_exe]

Originally Posted by SYT_Shadow

If you have no antirattle clips between the rotor and hat then you definitely want the kit.

In the latest two nickel kits the rotors came with them preinstalled, but that's because I tried the original alcon kit on the CS years ago and then had to order the antirattle kit separately

Get some rest!!

i wonder if they are pre-installed and i just never checked. still pretty loud at low speed.

per website.

Rotors - The 380mm two-piece rotors are the Alcon Advantage curved-slot design. They feature a floating hat assembly with anti-rattle clips included (optional use). The Advantage disc is cast and machined in the USA and uses a turbulator vane design to more-efficiently pump air through the disc. Alcon uses a proprietary iron with high carbon and copper content that has exceptional thermal stability and high strength from low weight. These rotors come pre-bedded with pad material so no bedding process is required.

[SYT_Shadow]

Originally Posted by e92BMW///M3

Even on the track the anti rattle clips are a must have in my book. Besides the additional time during a pad swap (minimal) my understanding is there isn’t any downside.

That's why I wanted to clarify with omg earlier. There are no pad antirattle clips on the Alcons, only rotor/hat antirattle clips.

[tsk94]

Got the car on track last night to test out the new parts.
Brakes work really well. At first, they were pulling a bit under hard application, but once they got bedded in a bit more that improved drastically (might be surface related slightly as well). The PFC 331/332 combo have A LOT of initial bite which took some getting used to compared to stock brakes with 08's. Once you get used to them they modulate quite nicely. Zero fade, pedal was rock solid even at the end of 30-minute sessions. No cooling, just have dust shields removed front and rear.

The white lettering does fade off though, mostly gone on the front caliper already Otherwise, they are great haha.

[omgzirra_exe]

Originally Posted by tsk94

Got the car on track last night to test out the new parts.
Brakes work really well. At first, they were pulling a bit under hard application, but once they got bedded in a bit more that improved drastically (might be surface related slightly as well). The PFC 331/332 combo have A LOT of initial bite which took some getting used to compared to stock brakes with 08's. Once you get used to them they modulate quite nicely. Zero fade, pedal was rock solid even at the end of 30-minute sessions. No cooling, just have dust shields removed front and rear.

The white lettering does fade off though, mostly gone on the front caliper already Otherwise, they are great haha.

i had this feeling also, the front bite was NICE. but the first couple uses it does pull, but once it did its thing it was sooo nice to modulate.

Originally Posted by SYT_Shadow

That's why I wanted to clarify with omg earlier. There are no pad antirattle clips on the Alcons, only rotor/hat antirattle clips.

I also want to note i was talking about the rotor rings, and not the caliper. i knew they didn't have those. honestly my car makes a lot of noises now so i don't even care haha

[omgzirra_exe]

double post

[SYT_Shadow]

I'm glad more people are experiencing the Alcon BBK, it's fantastic!

[PrimeBMW]

Just some more data points:
I have ST60 front on the E92 M3 street/back up track car. No brake ducting. There is pad taper.
AP Racing R5000 9668 front and rear with 355mm front rotors. Two 3" ducts going to each side. This car carries 20+ mph more on the straights. Performance is is the most important factor so pads are changed out before they get thin. However I don't think there is much taper.
Edit: I think it's fairly common to have uneven pad wear side to side depending if the there is heavy breaking clockwise or counter clockwise. I typically swap pads side to side on the street car and I'm sure my engineer does it on my race car.

[Davisca455]

ST-60 Trophy, fronts only.
No ducting.
Dust/heat shields in place.

The pads on the right are DTC-60 with 6 events on them.
I'd say no taper issues.

[leftfootbr8king]

6 days or 6 weekends? Either way, that looks like low pad usage. Maybe the track? Maybe the pace? Maybe the expertise in braking technique.

I run DTC70 on my Brembo GTS kits and have them almost down to backing plates after 3 weekends/6 days. Also no ducting.

[Davisca455]

Originally Posted by leftfootbr8king

6 days or 6 weekends? Either way, that looks like low pad usage. Maybe the track? Maybe the pace? Maybe the expertise in braking technique.

I run DTC70 on my Brembo GTS kits and have them almost down to backing plates after 3 weekends/6 days. Also no ducting.

6 days, with four to five 20 minute sessions.
Two of the days were on PS4s, the other four were on NT01s.

3 at Laguna Seca (1:47 best)
2 at Thunderhill East (2:10 best)
1 at Sears Point

I get into antilock on occasion, but I don't make a habit of it.

I have had an instructor tell me to get into the pedal harder sooner (2nd time on track), and another instructor tell me something like "nice release" when we were working on "V"ing Turn2 at Laguna Seca, on my 10th day.

But I don't know any particular braking fundamentals.
I guess my "braking philosophy" would be, brake as hard as you can without upsetting the car.

[slcook54]

I think comparing brake wear across different builds, tracks, ducting, temps, car weights, power levels and driving styles is next to useless.

I know guys running my exact setup who are getting double the life out of their fronts pads because they are running Thunderhill vs. Laguna.

[tsk94]

^ Depends so much on the track, pad compound, driving style etc. Ducting/cooling plays a huge role. Factory dust shields in place vs. proper ducting likely at least doubles (or longer) pad life.

I've often seen, slower and more inexperienced drivers be harder on brakes (going through pads quicker) than the fast guys. Overslowing the car, everywhere.. But again, too many variables at play to compare pad life accurately imo.

[leftfootbr8king]

Guys, that's why I called out differences in track, pace and braking technique. Appreciate the reiteration though.