Originally Posted by Snaildrake

Depends on use and what clearance you’re comfortable with. Sounds right for a 32mm Rim to me. I’m running new 28c Pro One TLEs on WR50s and they measure 31.5mm. On my RoadMachine tires and rims both have 4mm chainstay clearance each side (so 40mm total width at the rim), which to me is minimum. By the way I had to measure clearance more than once to get a real number at the rim diameter, since the RM chain stays angle into the bottom bracket.