i picked up a Raleigh RX 2.0 last summerish, and have been using it as a commuter/training bike/gravel bike and been having a good time with it overall. Im planning on putting road tires on it in the future but still running cross tires for now, but the stock wheels are heavy as lead. Ive looked around the interwebz and cant nail down a weight, but im sure theyre in the neighborhood of 2000grams. I cant swap them out with any of my other wheelsets because theyre disc, so therein lies the problem.

I thought about having a carbon disc set built up locally since ill be riding it a good bit on the road too, but probably wont drop that much $ on them. I looked at the IronCross wheels and the weights look good, but at 200lbs im over the limit for the lighter sets(~1500g). The IronCross' would also rule out running road tires probably because of the width, but i could always run file treads on it i guess.

EDIT: just saw the Alpha 340 disc wheels, didnt realize they started making them in disc. 1620g at a 200lb weight limit isnt too bad, and it would let me run road tires too.

So what would you guys recommend?

The other problem with the Iron Cross that I ran in to is they will only recommend a max pressure W/tube of about 50-60 psi. Less if running tubeless.  Where you thinking of lacing something up to your existing hubs or going completely new?  You could get that weight with an aluminum rim but you can get lighter and stronger with a carbon rim.  +1 on Enoch's recommendation for rim width.  I just built a set of I-9 Torch hubs to 30mm wide carbon rims/ with a standard double butted spoke and alloy nipples that tipped the scales at 1600 grams w/rim tape and valve stem.  Seems a narrower rim would be lighter depending on the hubs used.

I can help you as well if you can't get up with Enoch.

Mark

I'm 170lbs with all of my crap on, and haven't trashed a wheel since the ole Spinergy Rev X days.  That being said, I'm 2 for 2 for carbon rims for cyclocross the past 2 seasons.  A pair of American Classics cracked last year, and a pair of Easton EC90 SL's delaminated after 2 days of racing in foot deep Hendersonville mud.  

I rebuilt the AC hubs with Stan's Alpha 400's- went with the heavier Alphas since they're 18/24.  Tubeless, with tires, they're lighter than my Ksyrium SL's.  No issues, other than a bad Maxxis road tubeless bead that blew out.  I've been running the Vittoria tubeless cross tires on them. 

Unless you ride in perfect conditions I'd stay away from carbon.  If you're ever at a race check out what the guys from I9 run...not carbon.

I think you guys missed the "DISK" part which kinda changes things just a little.