I was going to write 32mm based on GP5000s but then thought better not go too far, people will get upset.
The last tyre I bought was 2.35" Mezcal and I'm still using up my road tyre stash from the last 10 years so have plenty of 23, 25, 28 to get through still.
It’s 30mm that measure 32 on wide rims now, grandad.