This is for 29er rigid bike, may apply to 26?? Running the 2.4x29 Ardent up front on what is now my back up bike. Started on i19 rim, new wheel set with i24- good improvement. Able to run lower pressure. After about 5 years, the rear wheel gets destroyed so I built a new wheelset using the Flow at i29. This flattened out the tread a bit, nice volume boost. Running 18PSI seems to be the sweet spot, lots of traction. Can't ride when wet do to sticky mud. Hardpack, bobble heads, broken shale. I have no desire to go wider rim for this tire, seems to work real well paired up.