I've got these on my 26" LHT (60mm):
https://www.planetbike.com/store/pro...26-x-60mm.html
My 1.6" tire is about 41mm, add in about 5mm on each side for clearance you've got 51mm. That's about 4.5mm of extra space on each side. Look at that on a ruler, it's pretty small. I don't ever notice that the fender is too big. In fact, I have been asked what brand are they and where did I get them.