We got a great deal on a '94 Trek T50 this past weekend. The one thing that I believe is a bit crazy is the tires the previous owner installed - Continental Four Season 700c x 23. They look really weird on the rims - the tires maximum width is actually less than the maximum width of the rims. Great for removing the wheels for transport, but......
One of the first changes we're planning is the tires. From research, I understand that all of the mid-1990s Trek tandems had the same frame - so I am hoping for some input from riders of similar vintage Trek tandems on this subject. I haven't measured things out yet, but am thinking that 700c x 28 or 700c x 32 would be a good size, and am leaning towards Continental Gatorbacks. My prime concern is durability in urban and rural environments.
We had been considering a Mongoose AL Wanderer, and then adding some upgrades. We found the Trek, and calculated that it made much more sense economically, and is a better match for us. I prefer CroMo frames.