Originally Posted by
Milton Keynes
This is what I put on my gravel/commuter/beater bike:
TIRE 26x1.95 KENDA SLICK K-838 You likely don't want anything knobby since that increases the rolling resistance, and since you're riding mainly on-road something that's more slick than knobby will work just fine. I'm sure the 26x1.50's you have will likely work. You've already got them, so might as well put them on and wear them out. If you don't like them, then you can always put something else on.
Only problem with those big slicks is you really want to avoid running over wet metal. I'm not telling the stories about wet trolley tracks and a metal grate bridge, but take my word on it. Otherwise, those tires really are fun to ride on.