We have a 700c DaVinci with their V-22 rims. Happy to run the 28mm Contis (4 seasons/gatorskins etc) at 120psi for our 340lb (plus the bike) team in day-to-day riding.

When we head out for a week long tour on our bumpy Aussie backroads we usually run 38mm hybrid tires at 85psi front and 95 psi rear as they absorb the shocks and are bulletproof compared to the lighter, race based tires. The 22mm rims fit them fine and the DaVinci frame and fork has plenty of clearance for the 38mm hoops. This is with discs at each end so no probs with caliper clearance.

Dave