Fixed Super Light Super Safe

Thats for metal clincher rims, and even for metal rims it can be a fair bit lower than that. A decent chunk under what is pinted on your tyres

Carbon fibre isnt great under the sort of focused tension a rim bead undergos. So is likely worse.

If the carbon is an insulator. How is it going to warm up properly?

Youre looking at hitting 180-200C throughout the bead to soften the epoxy.

The heat build up thing is purely a surface factor. Which might well ruin your braking. But it would take a lot of heat to soften the rim.

My post is ScobleKnowledge it is true, but plenty of anecdata out there about rims failing (deforming and/or spitting the tyre off) under high braking loads.

Some suggest that its' heat transfer into the air in the tyre, causing the pressure to rise in line with the heat- I don't have enough understanding of the matter to establish if that is credible.