Hey, thanks for that info. I did not know those were available in the 203 size - a possible future option for my Mobiky, though I'd prefer not to go narrower than the original 62-203 (12½ x 2¼) tires that came on the bike. One thing the Mobiky has is lots of clearance for even wider tires if they were available, and no caliper brakes to get in the way.

I think the 203mm rim size may be the smallest practical size for building up a traditional spoked wheel, which allows the use of available hub gears and hub dynamo. Has anyone seen a smaller wire spoked wheel?