the 303 might be a bit more versatile, but honestly, i say go for it. everyone's riding more surface area these days, even on the road. and 404s of any vintage are sweet!

-mike

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https://lshtm.academia.edu/MikeCallaghan

http://howtobeswiss.blogspot.ch/

if they are of an old V design rather than U shape, maybe handling issues in sidewinds. they may also be heavier if have a metal braking surface c/w all carbon but then again if they are all carbon the braking is never quite as good. personally given the extra cost of upgrading i'd use what you've got unless you're particularly nervy/picky about handling.

I've run 2013 Reynolds Strike 66 on my Felt AR at some point. Fast flat rides it's a good pairing. Sure they aren't the latest and greatest but they are better than some box trainers. My standard set is a 2013 Reynolds Assault 46 rim for reference.

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"Train so you have no regrets @ the finish line"

All day, every day!

Zipp just announced a big price drop in the entire Firecrest CC line - $2100 MSRP. So if it's in your budget I'd go with a brand new set - better shape, all carbon, lighter, better hub, etc. That's still an $1800 decision though compared to just keeping what you have. Another option is to pick up a lightly used set of Firecrest CCs. They typically go for %1400 but with the new pricing just announced you should be able to grab them for $1000-1200 within a month or so once people accept that reality.

Just keep them. They are paid for. Still a good set of wheels. If you have money sitting around that you don't know what to do with, then buy the latest and greatest. But I woild just use them and enjoy them.

I daily ride 404s (with aluminum track) on my S2. Works fine. Going from shallow aluminum wheels, it'll feel like your bike is a horse with ADD in a crosswind but it's no big deal.

Plus, you'll totally look pro...

I run Flo 90's full time on my Felt AR road bike with an occasional swap to a Flo disc in the rear if I'm just riding up and down PCH. Doesn't give me any trouble whatsoever and everyone comments on how fast the bike looks which really is what it's all about.

I also leave my c.2010 404s with Aluminium brake track on my S2. I wish I got to ride it everyday...
I'm sure it's faster than the box rims in this configuration, but its impossible to separate this from the effect of the GP4000S 2's on the 404s vs the Gatorskins on the box rims...

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Samuel Arthur Medway
Perth, Western Australia

Done it. Looked incredible. Go for it.

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Zen and the Art of Triathlon. Strava Workout Log
Interviews with Chris McCormack, Helle Frederikson, Angela Naeth, and many more.
http://www.zentriathlon.com

I ride my 404 FC's on my BMC TMR01..
Looks great, love the ride.
Keep your current 404's, and buy some new 404's when you can or while the sale is on.

Thanks for the input. What about mountain riding and climbing? I have a set of Bontrager race lites that came with my road bike in 2007. Not sure what the weight difference would be. I guess I could weigh them. I have never really tried to climb with 404's on.