The tire width question has been bounced back and forth like a tennis match. It’s up to the rider and the bike to determine. I have one of my old ten speeds that has wide tires , they measure 1.39” when inflated . I rode that bike the other day after riding some of my skinny tire bikes for a while and it was not unpleasant …just different. My favorite tire, unless an ultra smooth road , is 25-28c . That seems to be the best for me. I like to change up bikes from my stable and experience different road feel from time to time.