A 'bent on the road does not need suspension with 26" or 700C wheels. My bike weighs 30 pounds, I weigh 145 and I'm running on 32-559 tires at 65front-75rear psi, and my SWB Volae rides like a Cadillac even on crappy SF Bay Area roads. I've ridden a Bacchetta Ti-Aero for several weeks on 23-571 tires in the same area, and that thing would vibrate your fillings out with the tires pumped up to 120 psi. But let a bit of air out and the thing became better, though still not great. Wider tires can run less pressure, and that's the key.