Very nice! Great looking bike. A big thumbs up. How much clearance do you have left between the tire and the chain? I just bought an Avon 200/60-16 for my 16 by 5.6 rim and I think I have enough clearance. Avon says the tire is 7.9 inches wide. The rim is total of 6.1/4 inches wide. I have an 1 1/4" clearance on either side of the rim. Just wanted to see how much clearance between your 180 series tire and the chain you have. If you get a chance to measure for me?
Fryguy
