Brakes Brake Upgrade Discussion (Discs / Pads / ... )

[dave_da_bass]

What temperature has been reached with this setup (color marking on DBA) after track-days?
I got info from others that temp goes over 630°C (all marks changed color) on brake demanding track, but they did not have additional cooling and I do not remember pads they use.

On my discs the 630 degree mark is still red. The others changed their color. And Spreewaldring is really demanding on the brakes with almost no straight for cooling.

As I wrote, I’m really pleased with my setup.

 

[benko]

The Cooling doesn’t need to be in the papers from what I’ve read. I’ll see by end of this year when next TÜV is due.

I had 2 stints of 15 minutes on Spreewaldring, 15 minutes with 6 laps at GP Nürburgring and 4 laps on Nordschleife.
The brakes never faded, felt awkward or anything like that. The same pedal feel the whole time.

I’ve heard from heat cracks only with Zimmermann discs.

Thanks for the info. Personally I'm unsure how any discs can have significantly more heat dissipation given they're same mass, heat stress is heat stress, as long as it isn't 2 part floating it probably will crack depending on use. Keep in mind I did 4 x 30 minutes Slovakia ring and 1 track day of 18 Nordschleife laps and the stock discs were fine, got hairline cracks after the 2nd Nordschleife day, and after 3rd one they got dangerous. can't tell if pads matter for this, did Slovakia on stock pads, they were fine and didn't have fade just squishy as usual and worn out like crazy. Upgraded to rsl29 after that and loved them but by the time they were halfway gone the discs were garbage...
It would probably make sense for me to just get the cooling (maybe the lines for good measure), and only when the new discs die get the dba ones. Currently on nexd pads but they feeel just like stock, at least they were cheaper... I was recommended hawk pads with the Dbas actually.

 

[dave_da_bass]

That was a lot of heat stress then with all those laps.
I guess everything plays it's own role and a lot of factors are involved.
But for now, I'm happy. Sadly the next laps at Nordschleife are next year.

Regarding heat dissipation I'd say, that at least the DBAs have a lot more material on the between the surfaces where there air goes thru. So more heat can be stored and there is more surface area for the air to remove heat. And with the cooling the air gets forced thru there