Boy, have I been there. The World Tours are extra wide and tall. Any other 27" tire worked well on my 1975 CCM Tour du Canada, but the Michelin set proved to be too tall. The actually rubbed on the brake caliper (front only). I had to change them out, installing the Kendas in their place.


And, if anyone is willing to maintain a database and present it on the Net, for others to use, I say go for it. Just be prepared for some unexpected work.