New brakes at Simpson Motorsport

[Andyk]

Be warned that the AP disk's will crack with the RS29 pads, and will with the PF too

Why would you use a pad that cracks the disc, especially after spending all that money on them.

[glendog74]

Be warned that the AP disk's will crack with the RS29 pads, and will with the PF too

Why would you use a pad that cracks the disc, especially after spending all that money on them.

I'm sure the cracking is limited to extreme cases? It's certainly the first i've heard of it. Simpson said for me to fit Pagid RS29 for the track next season.

Beyond that they recommend swapping the worn discs/pads for Performance Friction discs and pads. The biggest expense of the brake upgrade are the AP calipers themselves after all - which are compatible with a wide range of disc/pad setups... :wink:

[glendog74]

Here's a couple more pics after a quick clean :-D

[SMD]

Loving those mate! :smokin:

My BBK is being fitted next week!

Are your wheels Powdercoated or sprayed?

si

[Andyk]

Very very nice Glendog....bet you pleased.

[RichW]

I'm sure the cracking is limited to extreme cases? It's certainly the first i've heard of it. Simpson said for me to fit Pagid RS29 for the track next season.

.....Beyond that they recommend swapping the worn discs/pads for Performance Friction discs and pads

AP's cracking the discs is very common on the Evo forums, PF discs are superior and not as likely to crack. There was a rumour that AP had a rogue casting of discs, but seen as i've cracked two sets of 332mm and one set of 362mm discs i dont believe it.

Heres a write up i did on the PF 01 pads - you can see how the heat has stressed the discs halfway down the thread. Those marks then turn into small cracks which then turn into bigger cracks to the point its risky running them any longer. http://www.lancerregister.com/showthread.php?t=167960


Eventually they will do this, and this guy was only running DS2500 so how on earth he managed to crack this is beyond me ...

http://www.lancerregister.com/showthread.php?t=159910

I dont mean to put a downer on your new brakes, just showing you what could potentially happen, hopefully it wont

[Andyk]

:smt103 Thats a worry

[Mark CSL]

Thats why i went for hispec as they come with performance friction 380mm discs, I have seen the ap discs do the cracking for my self but i am sure they will be fine.

( AS THEY ARE ON THE SLOW SG CSL ) :whistle:

glendog74
They are a great improvement over the standard set up and i am sure
you will love them when on track. Late breaking is fun as i am sure you will find out
:thumbs:

[RichW]

HiSpec customer service is dia, and so was their product that i received - with the PF discs though i think it could be quite good


I think the Evo's are so blisteringly quick and with their AWD you can really punish the brakes harder than you could with a CSL - hopefully GD wont have any problems - AP are certainly are one of the best on the market :smokin:

[DazBlackCSL]

Brakes look the nuts Glendog :thumbs: ...awesome mate ... just wait till you do your first track day ...big smile :-D

[glendog74]

Are your wheels Powdercoated or sprayed?

They were completely stripped and powdercoated. Cost £350 by The Wheel Specialist in Fareham, Hants. :thumbs:

[glendog74]

... just wait till you do your first track day ...big smile :-D

Yeah - can't wait! I have my Don Palmer car control day first before a track day at Donny on Sunday 30th of November :-D

[deleted_user_0_csl]

They look great... and personally prefer them in black on the CSL :thumbs:

[windy]

Calipers look pretty hefty, but the disks look pretty 'normal' sized? I'm guessing they are a fair bit bigger?

[Bealo]

Good choice Glendog, that is the set up i have and i was amazed at how good they are once you have bedded the pads in.

Makes me think why BMW put such rubbish brakes on the car in the first place....