Thats what mine looked like when the inside pad ran out of meat and it was metal to metal.
Ap Rotor Cracks
Started by
The Batman
, Jun 24 2017 08:40 AM
110 replies to this topic
#22
VXT Tim
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No it's not a Lamborghini!
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Posted 24 June 2017 - 04:38 PM
I'd be more than furious, a disc exploding and you conceivably hitting a tyre wall or worse at 100+ mph is beyond unacceptable.
These will be on sale tomorrow, the day after and the day after that! 
#23
The Batman
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Posted 24 June 2017 - 04:43 PM
I will whip the wheel off later tonight. However the outside pad has loads of meat left.
Yup that's my thought tim
Edited by The Batman, 24 June 2017 - 04:50 PM.
#24
VXT Tim
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No it's not a Lamborghini!
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Posted 24 June 2017 - 04:47 PM
What is Joe?
#25
The Batman
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Posted 24 June 2017 - 04:50 PM
I meant that's my thought 
#26
VXT Tim
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No it's not a Lamborghini!
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Posted 24 June 2017 - 04:52 PM
#27
hairy
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Posted 24 June 2017 - 05:01 PM
Jeez Joe, I'd be well hacked off with that.
#28
vocky
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Posted 24 June 2017 - 05:10 PM
that is bad, very bad 
You would be better off with standard discs and just replace them after a track day 
#29
The Batman
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Posted 24 June 2017 - 05:14 PM
Im not even sure if I can get 308mm standard discs for s1?
#30
smiley
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Thetan level 15
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Posted 24 June 2017 - 05:22 PM
Unbelievable. Ap disks with a liteweight car then this.
#31
darronwall
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Posted 24 June 2017 - 05:25 PM
I warped a pair after not a lot of use on the front of something lighter,the set on my old vx were faultlessUnbelievable. Ap disks with a liteweight car then this.
#32
AlfaAversion
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Posted 24 June 2017 - 05:25 PM
They look badly designed ..no room for expansion of the disc .
#33
alanoo
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Billy No Mates
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Posted 24 June 2017 - 06:40 PM
The ones on the first pictures are of no harm at all, but of course the last one is... oops
Usually it is due to a bad disc to pad combination. I'm sure you could find much more information on Seloc because the first factory 308mm AP'ed S2 exiges were in a TADTS mode
#34
WrightStuff
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i am sheldon cooper
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Posted 25 June 2017 - 09:29 AM
This is shocking.
Never had a moments issue with OE like std spec disks and they last for ages. So I'll live with the extra weight if this is the alternative thanks.
All the problems with warping and cracking seem to be with the fancy drilled and vented ones ?
#35
Wolfstone
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Posted 25 June 2017 - 11:17 AM
Tony VXR 56 had OEM drilled discs (before he sold his car). A predominant tracker he complained of significant brake judder. When I took a look at his discs both of the fronts were really badly cracked just like this.
#36
pete-r
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Posted 25 June 2017 - 11:43 AM
I wonder if the lack of floating bolts and the bells is a factor. Steel and ally expanding at different rates etc.
#37
The Batman
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Posted 25 June 2017 - 01:35 PM
If the material is a problem then they shouldn't be for sale imo
#38
Spitfire Engineering
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Posted 25 June 2017 - 03:16 PM
Can you list the full spec of everything please Joe, sizes etc.
#39
FLD
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Posted 25 June 2017 - 03:17 PM
It's the temp range the material operates over. It's mega hard for longevity but this is often only the outer case. If you overheat it then you get cracks like this through expansion beyond its range. This is why there's no warrantee. AP can't dictate the temp you get your brakes to. Get some temp sensitive paint and do some testing. You may need some cooling ducts.
#40
FLD
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Posted 25 June 2017 - 03:18 PM
Yay! Gaz on the case. A man who knows!
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