Not to thread jack your post Brock, but that "metal" rim in your pic is a Cast Magnesium Marvic which is probably old and brittle based on the pic. An aged cast magnesium rim will not hold up to any real stress test. You know I love you bro, but I had to chime in with that.
A carbon fiber wheel is stronger and safer than a cast magnesium wheel past its warranty period. Just fact.
Well built carbon is in fact strong but ultimately it won't provide the same safety net as an aluminum wheel (forged or cast).
In all fairness, I read the carbon wheel data page on your site and it does seem that Carbon wheels have come a long way from just 10 years ago. Manufacturing processes and quality control look to have improved dramatically.
......I'm not sure I'm ready for a set tho. Maybe one day.
, we consider any wheel that's not carbon to be "metal" in our world: forged, cast and spun aluminum, cast or forged magnesium, etc.
You are correct, the photo of the cast mag was taken close to 10 years ago when I was visiting BST in South Africa - they had piles of bent and broken "metal" wheels to marvel. I had used (and broken) cast mags in the past, so this particular wheel caught my eye.
FYI: a single carbon wheel is used during the DOT approval process (impact, cornering fatigue, radial fatigue tests), while multiple metal wheels must typically be used to pass the same tests.
I agree that,in general, a forged aluminum wheel might be tough to beat in the strength department - but they can also be twice as heavy as carbon (rear) and bend/stay bent to allow rapid air loss after an impact...so your safety net comment can be suspect in some situations.
If you get a chance, ride a bike with carbon fiber wheels - you will be far more likely to purchase a set. You can feel the weight difference in the first 10 feet of operation, and the smiles just keep getting bigger, the faster you go.