13/49 on the X wheels, which have 120/60 and 150/60 on them right now, is a bit steep for road use, but is right where I want it on the R setup for offroad (gnarly, sandy, hilly, rocky enduro type stuff). With my X wheels I am eventually shooting to have them setup for gravel to highway riding, not stunt supermoto, or anything too aggressive, so I'd like to get a comfortable cruise in the 65+ range (GPS). With a little math that gets to 13/45 or 13/46 (eventually want to put slightly taller Distanzias on, so that will help too). I guess I 47T with taller tires might be right on the money and is good with a 112 link.