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Old 04-26-2016, 02:36 PM
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3Series
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Default New PFC 08 Pads

I'm sure I'll be fine but I just wanted to confirm with some folks.

I installed new Sebro rotors and PFC08's on my 997.2.

Will driving ~150 miles street miles, mixed stop and go and highway be fine without getting the rotors and pads hot enough to properly transfer a layer of material?

My first track day for the season isn't for another 2.5 weeks and I don't want to glaze the pads.
Old 04-26-2016, 02:51 PM
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Alexandrius
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Originally Posted by 3Series
I'm sure I'll be fine but I just wanted to confirm with some folks.

I installed new Sebro rotors and PFC08's on my 997.2.

Will driving ~150 miles street miles, mixed stop and go and highway be fine without getting the rotors and pads hot enough to properly transfer a layer of material?

My first track day for the season isn't for another 2.5 weeks and I don't want to glaze the pads.
No. I use the exact same setup, and I have experimented with bedding them. Do a few 100 mph to 30 mph threshold braking. Do not stop!

Then drive as normal and re-bed during track day.

Don't swap pads in between, you will lose your transfer layer.

Also- 100 mph to 30 mph is much more force than 80 to 10 etc. higher speed braking has much more friction heat and wear.
Old 04-26-2016, 07:08 PM
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3Series
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Originally Posted by Alexandrius
No. I use the exact same setup, and I have experimented with bedding them. Do a few 100 mph to 30 mph threshold braking. Do not stop!

Then drive as normal and re-bed during track day.

Don't swap pads in between, you will lose your transfer layer.

Also- 100 mph to 30 mph is much more force than 80 to 10 etc. higher speed braking has much more friction heat and wear.
Cool thanks. Yeah I would like to bed them in the street I just don't know if will have the time to do it.

I need to drive out to the sticks and prefer to do it late night or early morning.

I just don't want to ruin the pad with street driving. I know I can transfer the pad material to the rotor on the way to the track.

Last edited by 3Series; 04-26-2016 at 09:02 PM.
Old 04-26-2016, 07:38 PM
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amso3
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We never bed PFC pads in on race cars (they are marked "race ready" on the box). Not sure about street use.
Old 04-26-2016, 10:18 PM
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DSC928
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Originally Posted by amso3
We never bed PFC pads in on race cars (they are marked "race ready" on the box). Not sure about street use.
Same here.....PFC ready to go. I've never had a problem.
Old 04-26-2016, 10:26 PM
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Gary R.
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Bedding a PFC Pad is a waste of time... getting ear plugs for road use is another story.
Old 04-26-2016, 10:54 PM
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Philip944
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agreed, don't waste your time or energy bedding on the street especially if you are on new pads AND rotors. I've done the exact same thing without issue. The only issue that I ever had was mixing of compounds on the same rotor.
Old 04-27-2016, 02:47 AM
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Alexandrius
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Yeah probably a waste of time but I think it's always nice to get the wear started a bit before you hit the track. Just for the sake of the rotor transfer layer. Hence why pad swapping can cause uneven wear.

. Either way nothing to be worried about. Maybe Just do a quick test of them to make sure they aren't really off before you start some insane slowing on track.
Old 04-27-2016, 01:21 PM
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I run the same pads and rotors on my 996. When I don't bed a new install before I hit the track, halfway through my 1st session I get serious (serious) front end shudder for several laps which disappears after several more laps. Not sure if it's related or not but that's my experience every time I change pads/rotors.
Old 04-27-2016, 01:23 PM
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3Series
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Originally Posted by Philip944
agreed, don't waste your time or energy bedding on the street especially if you are on new pads AND rotors. I've done the exact same thing without issue. The only issue that I ever had was mixing of compounds on the same rotor.

What issues did you have mixing compounds?

I plan to switch back and forth from Porsche or Textar street pads on long stretches between track days.
Old 04-27-2016, 02:07 PM
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Originally Posted by Spinout
I run the same pads and rotors on my 996. When I don't bed a new install before I hit the track, halfway through my 1st session I get serious (serious) front end shudder for several laps which disappears after several more laps. Not sure if it's related or not but that's my experience every time I change pads/rotors.
I run the same set-up on my 996. And I always do a few 80-40s on the street first. I've gotten a few weird 'not-quite-right' feeings if I don't....
But not if I introduce them with a few hard stops prior. And (almost) no squeals...
Old 04-27-2016, 02:10 PM
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Originally Posted by 3Series

I plan to switch back and forth from Porsche or Textar street pads on long stretches between track days.
Why?
Old 04-27-2016, 05:39 PM
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the_vetman
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Originally Posted by 3Series
What issues did you have mixing compounds?

I plan to switch back and forth from Porsche or Textar street pads on long stretches between track days.
I never bed in PFCs and switch out to street pads all the time in between track events. Never had a problem.

Then again, maybe some others have had juttering or such. Never had that issue.
Old 04-27-2016, 06:15 PM
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On my Cayman GTS with PFC08 I must bed them to get any stopping power and had to do the same to a Buddies E46 M3.

Peter
Old 04-27-2016, 06:16 PM
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Originally Posted by johneecatt
Why?
So I don't have to listed to them squeal.


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