They’re solid rims, I’ve had good experience with them. I ride some that are probably 15-20 years old now, 36 hole as well. Haven’t put a ton of miles on those but I’ve built tons of wheels with open pros over the years and don’t recall any coming back with rim issues. Hard to go wrong for $50 for the wheelset. I’d have no problem putting 32mm tires on them as well but I’m pretty liberal when it comes to tire/rim width matching.