Depends. Dry usage ? Wet usage ? All weathers ?

I would contact Easton specifically about brake track life. As far as the structure of the rim goes, in theory it should last longer than an aluminum rim IF it's properly manufactured. However, if it is damaged you need to toss it. I think certain shops can inspect CF now with ultrasound/infrared but I could be wrong (there's something on Calfee's website about cf inspection).

re wet braking: don't expect it to be very good. If you're lucky it will be "adequate".

Forgive my lack of knowledge on materials science, but I thought aluminum brake tracks lasted longer than carbon? If not, why is that?

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braking on alu rims essentially "shaves" material off the brake track. There are wear marks/holes on the brake track for alu rims

My apologies, I was referring to the fatigue life of the material. This isn't really applicable to the brake track... as far as I know.

Doesn't braking on carbon wheels also shave material off as well?

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I don't own a set of carbon rims, but I believe their pad compounds are made to be ablative to keep the rims from getting too hot. That might also reduce the amount of wear to the rim compared to aluminum pads and rims.

I'm not sure anyone knows because I don't think anyone has really seen it happen at all, let alone on various different rims.

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Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
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Freelance sports & outdoors writer Kathryn Hunter