Thought I'd come back to you guys for further recommendation. I asked quite awhile ago on my other 16 inch foldie and was happy with the feedback*. That one I ended up getting some Comets for it and been happy with the results.
I have a Dahon 7sp Boardwalk. I was rolling with some 406 20x1 1/8 Continentals, but what always seems to be the problem with them is that the sidewalk eventually fails. They rolled pretty good and had descent puncture protection. If you were to look at them they would still have most of the thread left still to be used, but one of the tires has spot where the sidewall is letting some of the tube out of it! I ended up putting some duct tape on this spot to stop that from happening, but I doubt I could make it dependable.
I'd like to find some tires that have good speed to them and some protection. Being that I'm +250lbs I'm going to need something that is always going to have to be pumped up to at least 100 psi. The tires I like to still have is some 20x1 1/8, but I would be open to something a little wider if convinced.
*no pressure here!