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      07-20-2012, 11:25 PM   #1
Fen335i
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PF01 - clips

Anyone know if new PF01s are coming with caliper clips like OEM pads? I have a set I bought 2 seasons ago without the clips and the constant rattling sound gets annoying after a while. Anyone come up with a fix for this?
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      07-21-2012, 11:16 AM   #2
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Pardon my ignorance but what are caliper clips?
I am planning on getting new pads, do i need them as well?
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      07-21-2012, 12:45 PM   #3
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Quote:
Originally Posted by besiktas View Post
Pardon my ignorance but what are caliper clips?
I am planning on getting new pads, do i need them as well?

He is referring to anti-rattle clips.
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      07-21-2012, 02:16 PM   #4
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Quote:
Originally Posted by Estoril Blue View Post
He is referring to anti-rattle clips.
Not exactly. The stock pads have spring clips on the back of the pad to hold them in place against the pistons. The PFC's don't have the clips, but they work fine anyway.

The "anti-rattle" springs are the big flat springs on the outside face of the calipers (the last thing you put on when reassembling them) and it keeps the piston assembly from rattling in the caliper bracket. Even if the pads have spring clips on the back, if you leave the anti-rattle spring off, the caliper assembly will rattle.
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      07-21-2012, 02:19 PM   #5
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If you're installing track pads, rattling is something you'll probably have to live with. I think PFC assumes if you are buying PF01s that the squealing will get your attention much quicker than the rattling.
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      07-21-2012, 04:34 PM   #6
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I found that pads with clips often get the clips sheared off when used on the track, so it really does not matter if they have clips or not. The big anti-rattle spring on the caliper helps, if installed correctly, and so does anti-squeal grease (make sure to use high-temp one though).
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      07-21-2012, 05:49 PM   #7
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I used titanium shims and anti squeal spray on my PF-Z street pads. Rattle has been gone for a couple of months now. See my other thread on this:

Clatter thread
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      07-22-2012, 06:24 PM   #8
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Thanks Radiation Joe...I might give that a try next time. I just swapped pads to the PF01's (track day tomorrow!). I used a little bit of anti-squeal material...they become somewhat glue-like after a while, so I'm hoping they help to hold the pads in place a little better and cut down some of the chatter. I don't mind the squeal...but the chatter drives me crazy. ;-)
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      07-22-2012, 09:05 PM   #9
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I just installed PF08 this week-end and no, they don't have the anti rattle clips. So my guess is that the PF01 won't have them either. They do rattle and squeal a lot , but worked great at the track .

Last edited by CanAutM3; 07-23-2012 at 06:48 AM.
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      07-22-2012, 11:41 PM   #10
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Oh yea, they work fantastically on track. A race pad like PF01's should be everyone's first mod if you track your M3 and drive it hard.
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      07-23-2012, 10:54 AM   #11
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Quote:
Originally Posted by Fen335i View Post
Thanks Radiation Joe...I might give that a try next time. I just swapped pads to the PF01's (track day tomorrow!). I used a little bit of anti-squeal material...they become somewhat glue-like after a while, so I'm hoping they help to hold the pads in place a little better and cut down some of the chatter. I don't mind the squeal...but the chatter drives me crazy. ;-)
So did the anti-squeal paste help reduce the rattle/chatter for you?

I'm like you, I find it quite disturbing.

Last edited by CanAutM3; 07-23-2012 at 12:04 PM.
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      07-23-2012, 11:34 AM   #12
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Quote:
Originally Posted by CanAutM3 View Post
So did the has the anti-squeal paste help reduce the rattle/chatter for you?

I'm like you, I find it quite disturbing.
It doesn't work once the pads get hot, i.e. when you brake.
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      07-23-2012, 12:03 PM   #13
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Quote:
Originally Posted by LiM3y View Post
It doesn't work once the pads get hot, i.e. when you brake.
It's what I thought. Thanks for the feedback, I won't bother putting it on.
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      07-24-2012, 01:30 AM   #14
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It helped a little bit...but you are right...after getting them hot on track they started to chatter again.
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      07-24-2012, 01:39 PM   #15
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You want them to chatter. It means they're floating around in the caliper as designed. If they have clips, the single piston can be a pivot point and you are more likely to get hot spots, binding, uneven wear. Plus the less they touch the caliper the less heat is transferred to the brakes.

Want to stop rattle? Drag your brakes under 15mph or so when they start rattling.
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      07-24-2012, 01:47 PM   #16
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FWIW, the PFC-06 pads I bought recently do have retaining clips. The 06 pad is a longer wearing pad that is supposed to be easier on the rotors than the 01's but very close in performance (they say within 4%). But I've heard this pad is being superceded by the 08 compound which as noted above is clipless.
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