After responding to your friendly PM last week, I checked my messages and I wasn't certain that my reply to you made it through.
In that regard, I'll recap my response. My Muni is the Nimbus Oregon. The rim size is 26", the tire is 3.8" wide. The Muni standing next to a 36" looks to be the same overall height. It's a very comfortable and enjoyable ride.
Loved riding it in Yosemite Valley. Got real busy with LBUSD right after vacation and havent had a chance to ride lately. Can't wait, though.