I also have a 1983 59cm Lotus Legend Compe in what was called Oxide Green. Columbus SL tubing with Suntour dropouts on the rear and Tange on the front. The clearances are very tight. Its maxed out with Continental 24's.
Mine was received as a gift from a friend and was almost completely original with the exception of silly upright bars. I changed a few things around, switched the crankset from a Sugino 144 bcd crank to a Suntour Superbe Pro crankset and switched out the wheelset.
It's my favorite bike by far.