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      09-24-2014, 10:02 PM   #45
jbraslins
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Quote:
Originally Posted by SuckaGDog View Post
Keep at it guys. Carbotech states that if you put any of their pads on used rotors with traditional non ceramic pads it will squeal till all the old material is worn off on the rotors. Putting some brake quiet paste on the pad backing side will also help.

The 1521 pads are fantastic! I have them on my M5 and have not looked back.
I had XP12s on brand new rotors. 2 HPDEs later, i swapped those for 1521s. Should be all carbotech compounds.
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      09-25-2014, 02:14 AM   #46
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I haven't had any issues with XP10s at least on a daily driver when it comes to rotor wear.
My 370Z still have the XP10s on it, all during the summer months. I had 10s on my Mini as well, and I drove in -30deg C going ice racing with that. I understand it wears more than a pure street pad, but I wouldn't worry about it.

Maybe the XP12s are more aggressive?
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      09-25-2014, 03:44 AM   #47
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Quote:
Originally Posted by gthal View Post
XP12 front and XP10 rear worked exceptionally well. No fade at all. They were, however, noisey but for a track pad who cares
So, install pads just before the track day and then go back to the 1521 or stock? Is it okay for the rotors?
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      09-25-2014, 06:24 AM   #48
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Watching this tread with interest as I am looking to go to 1521s for the street. I sure hope the squealing stops. Please let us know. For those that have them, how are the 1521s for dusting. The OEM pads are going to give me black lung from cleaning the wheels.
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      09-25-2014, 02:40 PM   #49
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Quote:
Originally Posted by celler View Post
Watching this tread with interest as I am looking to go to 1521s for the street. I sure hope the squealing stops. Please let us know. For those that have them, how are the 1521s for dusting. The OEM pads are going to give me black lung from cleaning the wheels.
Virtually no dust. However lots of noise which is unusual as they were very quiet on my C7. Hoping I can fix that.
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      09-26-2014, 09:14 AM   #50
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Quote:
Originally Posted by celler View Post
Watching this tread with interest as I am looking to go to 1521s for the street. I sure hope the squealing stops. Please let us know. For those that have them, how are the 1521s for dusting. The OEM pads are going to give me black lung from cleaning the wheels.
I'll be experimenting with a different set of pads: Porterfield R4 for the track and Centric semi-metallic for the street. Really wanted to get a PFC pad, but they have nothing for this car yet -- maybe next season. Will provide some feedback on the R4 in a couple of weeks after the track.

FWIW, I've used the semi-metallic for years on my E46 M3 and they were great. Silent and no dust. Not quite as quick at stopping as the OEM pads, but plenty good enough for the street.
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      09-26-2014, 10:31 PM   #51
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Pagid RS29's are now available at your Pagid dealers at very limited quantities due to very high demand:


http://f80.bimmerpost.com/forums/sho....php?t=1040112
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      09-27-2014, 06:12 AM   #52
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Does anyone know if the PFC08 compound is compatible with the OEM pad for easy swaps before/after track days?
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      09-27-2014, 06:31 AM   #53
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Quote:
Originally Posted by gthal View Post
Does anyone know if the PFC08 compound is compatible with the OEM pad for easy swaps before/after track days?
Yes they are. i love those PF08 .
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      09-27-2014, 01:39 PM   #54
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Quote:
Originally Posted by gthal View Post
Does anyone know if the PFC08 compound is compatible with the OEM pad for easy swaps before/after track days?
They work especially well if you change them at home, using the drive to the track to allow them to scrape off the old pad. If there is no one around, you could also go through a bedding cycle on the way there to get them all set. On the drive home, the friction of the PFC08 seems to clean up the rotors so there is no compatibility problem when switching back to street pads.
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      09-29-2014, 01:34 AM   #55
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Quote:
Originally Posted by gthal View Post
Does anyone know if the PFC08 compound is compatible with the OEM pad for easy swaps before/after track days?
They are one of the best pads out there. The extended wear compound is particularly helpful on the wallet, not to mention they take heat and abuse better than some other track/race pads out there and are more consistent all the way down to their minimum thickness.

Head over to the E9x M3 or Porsche(rennlist) board and read all the positive feed backs.
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      09-29-2014, 07:23 AM   #56
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back from road atlanta. xp10's squeal like a banshee on street. work perfectly on a very high speed and heavy braking track. spent two days mostly with students riding along. only change was the pads. i kept my same oem fluid. I want to change as few variables as possible so i can directly relate my experience. so the car performed extremely well for being completely stock other the the pads. i treated it just like i did my GT3 RS. warmed it up for half a lap and then start adding speed. same braking points as GT3's on the course that day. no hint of fade entire time. i just cool off the brakes before pitting in on the back straight. don't even need a full lap. I will post a separate review on the cars performance but relative to brakes i'm happy with the XP10's. i feel they are very easy to modulate. consistent predictable and linear in threshold braking. on the street even cold they stop the car well. just the banshee siren call when cold is the only issue for some I think. and they will be cold until you get on a track. no way you heat them up enough on public roads without doing some very illegal and dumb stuff. maybe a little brake quiet and some caliper grease will help.

PS big thanks to Ilia and IND for getting me them in time for track! you guys are awesome!!!
Also my shop is about to open in Augusta and I have to thank my master technician again for getting these bad boys on the car the night before the track event and i don't have to worry about a thing. superb job!
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      09-29-2014, 07:29 AM   #57
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Quote:
Originally Posted by HP Autosport View Post
They are one of the best pads out there. The extended wear compound is particularly helpful on the wallet, not to mention they take heat and abuse better than some other track/race pads out there and are more consistent all the way down to their minimum thickness.

Head over to the E9x M3 or Porsche(rennlist) board and read all the positive feed backs.
I couldn't get them in time but I love PFC 08's. and they seem to last forever!
also pad swap on these brakes are so damn fast! its great! way quicker than the GT3. don't have to remove a single caliper. pop 2 pins, spread pistons, throw in pads, replace spring clip, pop back 2 pins. my technician changed the entire car in 15 minutes.
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      09-29-2014, 09:07 AM   #58
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Quote:
Originally Posted by karussell View Post
I couldn't get them in time but I love PFC 08's. and they seem to last forever!
also pad swap on these brakes are so damn fast! its great! way quicker than the GT3. don't have to remove a single caliper. pop 2 pins, spread pistons, throw in pads, replace spring clip, pop back 2 pins. my technician changed the entire car in 15 minutes.
My XP12/10 will be arriving today. Pad swap sounds much easier than E36. Just poke those 2 pins with a punch in towards the car I assume? Then the pads come out the back of the caliper without removing it?

Tight, technical track coming up this weekend for M4. Stock brake fluid also, but carbotechs and R888s. I'll report also.
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      09-29-2014, 10:32 AM   #59
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Quote:
Originally Posted by MaynardZed View Post
My XP12/10 will be arriving today. Pad swap sounds much easier than E36. Just poke those 2 pins with a punch in towards the car I assume? Then the pads come out the back of the caliper without removing it?

Tight, technical track coming up this weekend for M4. Stock brake fluid also, but carbotechs and R888s. I'll report also.
sure thing maynard. just the retaining pins front and back same deal. brake pad sensors i just had them zip tied out of the way. less hassle.

cool looking forward to your report. i don't think this car needs more aggresive brakes on the front but good to see what you experience. had a friend in his F80 M3 out there as well on stock brakes. it held up fine for 20 minutes and then his brake pedal got a tad softer. but those oem pads had been beaten down pretty well already at SPA and Nurburgring. less than 50% of the material remained adding to them getting hotter faster. road atlanta is an extremely fast track. pure torture on brakes. still amazed bone stock the car can handle it.
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      09-29-2014, 03:12 PM   #60
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Quick update, Carbotech 1521s still squealing on the street. Been over a week. Does not look like it's getting any better. Unfortunate, cause I would have loved to use them on the street. Going back to OEMs for DD after VIR this weekend.
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      09-29-2014, 03:31 PM   #61
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Quote:
Originally Posted by jbraslins View Post
Quick update, Carbotech 1521s still squealing on the street. Been over a week. Does not look like it's getting any better. Unfortunate, cause I would have loved to use them on the street. Going back to OEMs for DD after VIR this weekend.
Frack. I was hoping for a better result. Did you try using blue brake goop on the pad backings? I used to paste them up really good and then let them set up for 24 hours before installing the pads.
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      09-29-2014, 04:44 PM   #62
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Originally Posted by celler View Post
Frack. I was hoping for a better result. Did you try using blue brake goop on the pad backings? I used to paste them up really good and then let them set up for 24 hours before installing the pads.
No, I guess ill give that a shot after this weekend.
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      09-30-2014, 09:37 AM   #63
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Anyone serious about taking this car to the local road course needs to place real track pads in the car and then place the OEM, (or equivalent) back in for DD duties. It is so simple to change pads in this car why people are looking for a pad to do both, which means there is always a compromise somewhere, is beyond me.
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      09-30-2014, 09:58 AM   #64
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Not that I am looking, I keep the track pads on all the time, but I am too lazy to keep changing them
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      09-30-2014, 10:25 AM   #65
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Quote:
Originally Posted by thebishman View Post
Anyone serious about taking this car to the local road course needs to place real track pads in the car and then place the OEM, (or equivalent) back in for DD duties. It is so simple to change pads in this car why people are looking for a pad to do both, which means there is always a compromise somewhere, is beyond me.
Bish
i think a moderate ceramic pad would be fine all around for this car. it really has enough cooling and i doubt lap times would be improved greatly between a metallic endurance pad and a ceramic. sure the ceramic pad would wear slightly faster but the very nature of this car is that its at home on the street and the racetrack.
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      09-30-2014, 01:28 PM   #66
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Quote:
Originally Posted by thebishman View Post
Anyone serious about taking this car to the local road course needs to place real track pads in the car and then place the OEM, (or equivalent) back in for DD duties. It is so simple to change pads in this car why people are looking for a pad to do both, which means there is always a compromise somewhere, is beyond me.
Bish
Who is looking here to do both? I run XP12s/10s on track and was hoping to do 1521s on street which are advertised as street compound.

Do you do anything else when you come to these forum besides make irate posts?
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