I have a 2005 Downtube IX FS folder that the o.p. can HAVE. 20" wheels do NOT roll easier than larger wheels. But that does NOT mean that folders aren't very useful as alternatives to full size bikes for specific situations. I have two other folders besides the Downtube and at least five full size bikes and two tandems (was three). One 20" folder takes most of a car trunk when folded. The idea isn't to schlep folders around in your trunk. The Peugot has 27" wheels? That will limit tire choices. 1.6 mi. on a bike is such a short distance that I wonder if the o.p. is using gears correctly if they are getting winded. Some time spent around someone who knows bikes might be of benefit if this is all new territory. FWIW. Edit: 1986 Triathalon has 700C wheels so 1989 probably does as well. Both years came in several sizes. What size is this one? Is it the right size? It matters.