AP Racing Brakes - Squeal?
Discussion
The chap that fitted them doesn't think they should make a noise either so it sounds like they were contaminated by the original owner. looks like they may need a skim. I'll see it the track day next Saturday does anything. Even if they are crap on the track they've got to be better than the original set-up......?
Do you track often? What's your brake set-up?
Do you track often? What's your brake set-up?
The Standard A/P conversion with the DS2500's are OK for track work.. not brilliant but they do the job.. they can squeel a little.. brake harder and get them hot... and see.. you will find that you may get some vibration up the steering as the DS2500 pads can leave a deposit on the discs which can grab..
Get 'em hot and give it what for on the middle pedal..
change to pagids after..!
Get 'em hot and give it what for on the middle pedal..
change to pagids after..!Yup... RS29's in the AP's.. after a bit of trial and error i went down the Pagid route.. they are loads better, more stableon the track and they dont squeel as bad as you think..
I think most people here will agree...they are the ones to go for..
They will be a fairly noisy dont worry about it .. get them hot on the track and see how they feel.. road work doesnt really give them much chance to get hot like circuit work..
Will this be the 1st outing on the AP's..?
I think most people here will agree...they are the ones to go for..
They will be a fairly noisy dont worry about it .. get them hot on the track and see how they feel.. road work doesnt really give them much chance to get hot like circuit work..
Will this be the 1st outing on the AP's..?
Edited by RatBoy M3CS on Monday 4th August 20:02
RatBoy M3CS said:
The Standard A/P conversion with the DS2500's are OK for track work. You will find that you may get some vibration up the steering as the DS2500 pads can leave a deposit on the discs which can grab..
I agree with this and have experienced the same problem with DS3000's in my race car. Interestingly though I've never has that problem with DS2500's which I run in the CSL. Back to back testing we found the DS3000's to be the best pad for absolute stopping power in the race car. Lots of people have different preferences but the data we logged just last week suggested the Ferodo DS3000's out performed the Pagids (being run in an identical car with identical AP brakes and if identical weights)
The problem with the Ferodos is that they can stick and grab the pad when they aren't up to temp. On cool down laps the vibration through the steering with only slight pressure on the brake is clearly noticeable and would be unmanageable in a road car for sure. Get the brakes hot again in racing conditions and it seems to go away.
(Edited to add the Pagids we were testing against in this instance were R29's ... Pagid do have a better sprint compound for comparison to the DS3000 but it is bonkers expensive if memory serves me correctly.)
Edited by houlbt on Wednesday 6th August 16:28
This will be my first track day with the AP's. Did the ring on pagid RS42's on the standard discs and liked them until the discs gave up which didn't take long!!
All very useful advice guys and glad to hear the DS2500 shouldn't squeal as this is what I'm was led to believe, looks like they will need a skim if the track day doesn't sort....As I only track the CSL once or twice a year to pass through my local high street without the attention
whilst still having a decent set of brakes is far more important, especially for the wife!
All very useful advice guys and glad to hear the DS2500 shouldn't squeal as this is what I'm was led to believe, looks like they will need a skim if the track day doesn't sort....As I only track the CSL once or twice a year to pass through my local high street without the attention
whilst still having a decent set of brakes is far more important, especially for the wife! i run DS2500 on road and they are superb and no squeal
i run RS29 on track and much harder, wear less and stop you every time. They tend to squeal on road once you have done a day or two road days after track work
Be careful with DS2500 esp at Bedford as they will wear pretty fast and dont forget you have no pad wear indicators!!!
my guess is that you have some contamination on your disks from porevious pads but i would not skim them, just use them and it will wear off.
Its only squeal!!
i run RS29 on track and much harder, wear less and stop you every time. They tend to squeal on road once you have done a day or two road days after track work
Be careful with DS2500 esp at Bedford as they will wear pretty fast and dont forget you have no pad wear indicators!!!
my guess is that you have some contamination on your disks from porevious pads but i would not skim them, just use them and it will wear off.
Its only squeal!!
Agree.. do a couple of hundred miles road work.. and the pads will most likely come back in, and clean up the discs nicely.. mine are usually really fierce and noisy after a beating on the track.. but a week later they go quiet again.. its normal on DS's.. the pagids i have found to stay a bit noisier for 2 weeks after.. but again they calm down after a bit of road work..and then start squeeking.. but this only happens on light pedal loads.. more pressure and it stops instantly.. so does the car..
track day at bedford was superb! The wet conditions really showed how good the car is and with M track mode on we had a lot of fun!
We had a small issue with leaking brake fluid from the rear bleed nipple (apparently thats what they are called
) which took some of the caliper paint off but a quick tighten sorted this out. Yes I have had words with the garage that fitted them and they're having a look on Thursday to inspect the damage. The 2500 pads did suffer a bit after a few laps but they still managed to stop the car far better than the old set-up ever did 
.
I don't want to speak to soon but so far the pads are are quiet as you like
We had a small issue with leaking brake fluid from the rear bleed nipple (apparently thats what they are called
) which took some of the caliper paint off but a quick tighten sorted this out. Yes I have had words with the garage that fitted them and they're having a look on Thursday to inspect the damage. The 2500 pads did suffer a bit after a few laps but they still managed to stop the car far better than the old set-up ever did . I don't want to speak to soon but so far the pads are are quiet as you like
i don't have rs29s, thats the point. I went for ferodo ds2500 road pads as I had pagid on the standard discs before and they were ridiculous! I appreciate pagid are great on a track as they were great when I tracked them, however, I use my car every day so needed a compromise.
From what I'm led to believe DS2500 shouldn't squeal and as of yet they are still behaving
Still not counting my chickens!
From what I'm led to believe DS2500 shouldn't squeal and as of yet they are still behaving
Still not counting my chickens!
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