Originally Posted by
auchencrow
Every English 3speed I've encountered takes 590mm (26 x 1-3/8 ) EA.3's, or 597 mm (26 x 1-1/4 ) EA.1's.
Later models run 26 by 1 3/8 while older British bike have the EA1 which was also used as a performance wheel.
With the availability of nicer 590 tyres and some decent rims you can get some very nice performance and a very nice ride quality to boot.
My 1951 Sports has rebuilt wheels with Mavic hoops and Schwalbe Delta Cruisers... it came with 26 by 1 3/8 wheels which were probably replacements.