Replacement discs/pads - AP

Pip1968 · 20-07-2012, 10:35 AM

I think my front discs are on their way out as after my last track days at the Nordschleife there seems to be a lot of small cracks around the drilled holes (I will post up some pictures when I get back home). Furthermore my pads seem to be down to the last 7mm of meat left - presumably dangerously close to the rivets that holds the material in place. What is the cut off mark/thickness on RS29s?

I have DS5000 for normal road use and RS29s for track only and run a full AP Racing set up.

Anyway what are most using for replacement discs with AP? I take it AP discs still have a bad reputation - is anyone running AP disc (and tracking their car). Aside from that what else is there - PF discs - £475 (??)/ AP/ BMW OEM/ Alcon (or does this require other replacement parts???? I take it grooved is the way to go now.

Finally if you have any tips any pointers as to where best prices/ sourcing will be appreciated. No rush as I am away until August and not tracking the CSL for a while. It is the GT3's turn

.

Pip

gav · 20-07-2012, 01:31 PM

I've got same set up
Rs29's
Ap front discs
Oem backs

Similar purpose
No problems.

Contacted thorney Motorsport and asked the same questions you are asking and sent a picture to them.
They were helpful, but didn't have stock available immediately.

I am sure there are other reputable sources.

I'd be interested also as could do with some more pads in particular.

**glendog74** · 20-07-2012, 04:58 PM

I don't see why the whole 'shite AP' discs thought still prevails.

I've had 2 sets of AP discs since buying my AP setup over 3 years ago and have not had any issues at all bar one front disc developing a crack which extended to the disc edge (the discs were worn at that stage).

I have done plenty of UK track days and Ring trips, etc. Small hairline cracks are quite normal on AP discs. I use RS29 pads.

trackm3 · 20-07-2012, 05:15 PM

Weve never had issues with using both style AP Disks, supplied and used these on different race and track day cars for 6 years now.

**CraigMillwardCroft** · 20-07-2012, 05:42 PM

I have always run AP brakes apart from pads never had any issues with disc's

**shimmy** · 20-07-2012, 07:07 PM

AP front discs are fine, just make sure they are bedded in not with the ds2500

they craze earlier than PF but last as long in my humble opinion

but small cracks around the holes and 7mm left sounds like you have 6monrhs use left

20-07-2012, 10:35 AM	#1
Pip1968 S5, Sport Off, DSC M-track Join Date: Dec 2007 Location: Kent, England Posts: 940 Casino cash: $8383	Replacement discs/pads - AP I think my front discs are on their way out as after my last track days at the Nordschleife there seems to be a lot of small cracks around the drilled holes (I will post up some pictures when I get back home). Furthermore my pads seem to be down to the last 7mm of meat left - presumably dangerously close to the rivets that holds the material in place. What is the cut off mark/thickness on RS29s? I have DS5000 for normal road use and RS29s for track only and run a full AP Racing set up. Anyway what are most using for replacement discs with AP? I take it AP discs still have a bad reputation - is anyone running AP disc (and tracking their car). Aside from that what else is there - PF discs - £475 (??)/ AP/ BMW OEM/ Alcon (or does this require other replacement parts???? I take it grooved is the way to go now. Finally if you have any tips any pointers as to where best prices/ sourcing will be appreciated. No rush as I am away until August and not tracking the CSL for a while. It is the GT3's turn . Pip

20-07-2012, 04:58 PM	#3
glendog74 CSL Register Uber-poster! Tetris Champion! Join Date: Apr 2008 Location: Cornwall Posts: 8,861 Casino cash: $32299	I don't see why the whole 'shite AP' discs thought still prevails. I've had 2 sets of AP discs since buying my AP setup over 3 years ago and have not had any issues at all bar one front disc developing a crack which extended to the disc edge (the discs were worn at that stage). I have done plenty of UK track days and Ring trips, etc. Small hairline cracks are quite normal on AP discs. I use RS29 pads. __________________ Cha'mone Mother F**ker!

20-07-2012, 07:07 PM	#6
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	AP front discs are fine, just make sure they are bedded in not with the ds2500 they craze earlier than PF but last as long in my humble opinion but small cracks around the holes and 7mm left sounds like you have 6monrhs use left __________________ .

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20-07-2012, 01:31 PM	#2
gav S4 - Getting the hang of it Join Date: Aug 2011 Posts: 211 Casino cash: $9245	I've got same set up Rs29's Ap front discs Oem backs Similar purpose No problems. Contacted thorney Motorsport and asked the same questions you are asking and sent a picture to them. They were helpful, but didn't have stock available immediately. I am sure there are other reputable sources. I'd be interested also as could do with some more pads in particular.

20-07-2012, 05:15 PM	#4
trackm3 S5 - Full Throttle Join Date: Sep 2009 Posts: 411 Casino cash: $18073	Weve never had issues with using both style AP Disks, supplied and used these on different race and track day cars for 6 years now.

20-07-2012, 05:42 PM	#5
CraigMillwardCroft CSL Register Uber-poster! Join Date: Oct 2010 Location: Marlow Posts: 3,973 Casino cash: $18153	I have always run AP brakes apart from pads never had any issues with disc's