Not quite in the 37-42mm range, sadly but:
The Pirelli Cinturato is available in 35mm. It measures true to size on VERY wide rims, unfortunately for you. Quite a sticky compound from what I’ve heard (the P Zeros I had were fantastic) and also one of the most durable tires on the market. TLR.
The 36mm Challenge Strada Biancha might be worth looking into. They have a cotton version and a vulcanized (nylon?) version. I’ve heard bad things about their TLR tires so if you really want to go with them, I’d stick to tubes. They seem to have quality problems in general, though
Last edited by smashndash; 06-05-20 at 12:23 PM.