Cracked Brake Discs M5 F10

Cracked Brake Discs M5 F10

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HoHoHo

14,980 posts

249 months

Friday 26th August 2016
quotequote all
IATM said:
W8PMC said:
foxsasha said:
I'm speculating without doing any research but 12k miles doesn't shout fair life to me. I certainly wouldn't consider a potential £12000 bill for 8 sets of front brakes over a 100k life of a car acceptable. But that's just me.

To the best of my knowledge none of the Padgid race range is R90 compliant so none of it is road legal when installed to an OE brake system. They're race pads, not road pads. Although they do work spectacularly well when installed on road cars driving

ETA: I'm taking the OP at his word here that the car hasn't been used on track and hasn't been abused on the road.

Edited by foxsasha on Tuesday 25th August 19:55
I would agree that you'd hope the discs had a longer on road life than 12k miles, however as said it's a near as damn it 600bhp 2 ton car & even without track work the discs will show signs of wear very quickly & that includes small cracks emanating from the drill holes. If they've failed & it doesn't sound like they have then of course a warranty claim is a valid approach, but 12k miles is a fair stint & even though the O/P states he's not done any track days, a few major stomps with insufficient cooling can lead to light cracking on discs very easily/quickly.

My Pagid question was with regard to RS29's, which i'd always believed to be a fast road/track pad & thus approved for road use?
I have quite a lot of talk about cooling down the brakes and not sitting with the brake pedal pressed at traffic lights at a hard run but in these situations what are people doing?


So after a heard run how long are you meant to let the brakes cool and how?
What do people do if they come to a stop at lights?
You can apply the handbrake and then release the pedal.

Once you hit the throttle the handbrake is automatically released.

Welshbeef

49,633 posts

197 months

Friday 26th August 2016
quotequote all
HoHoHo said:
You can apply the handbrake and then release the pedal.

Once you hit the throttle the handbrake is automatically released.
But when you park up after a hard drive & put the hand brake on then it causes issues.

HoHoHo

14,980 posts

249 months

Friday 26th August 2016
quotequote all
Welshbeef said:
HoHoHo said:
You can apply the handbrake and then release the pedal.

Once you hit the throttle the handbrake is automatically released.
But when you park up after a hard drive & put the hand brake on then it causes issues.
In which case the only answer is to drive slowly after your hoon to cool them or don't put the handbrake on.

Edited to add the handbrake is only the rear pads not the front so possibly of some use as it's the front brake assembly that tends to get very hot I would have thought.

Welshbeef

49,633 posts

197 months

Friday 26th August 2016
quotequote all
HoHoHo said:
In which case the only answer is to drive slowly after your hoon to cool them or don't put the handbrake on.
Just as you would with any turbo car you don't want oil cooking and stationary in glowing hot turbos hence the last few miles at a sedate pace.

HoHoHo

14,980 posts

249 months

Friday 26th August 2016
quotequote all
Welshbeef said:
HoHoHo said:
In which case the only answer is to drive slowly after your hoon to cool them or don't put the handbrake on.
Just as you would with any turbo car you don't want oil cooking and stationary in glowing hot turbos hence the last few miles at a sedate pace.
Not sure if you're aware, the M5 has coolers which are doing their job for 15 or more minutes and can be clearly heard as you lock the car yes