I repair carbon fiber on my radio control aircraft, helicopters, the big ones with 6 foot rotor span. Anyway, I use commercial CF and the best 2 part epoxy money can buy. The epoxy, after a year or two, gets yellow and starts chipping and getting brittle mostly due to the sun hitting it and I have to clean it up and redo the repair. Airbus had to stop making their vertical fin out of CF cause they were getting brittle and snapping, making the jet sometimes uncontrollable then ploosh in the ground. To this day, when I fly, if it's an airbus, I take a different flight on an airline that uses boeing. CF is just not good in some applications and fins and MC wheels ain't those places.