I've been playing with different tires as of late. My Fuel EX comes with Bontrager XR4 Team Issue 2.4. I got some XR4s in a 2.6. First put them front and back, then did one of our big climbs yesterday and decided it was a big fat NOPE for the rear-I felt like I was riding in molasses. I really liked the cornering security I felt with the 2.6 up front, however. I'm going to put the 2.4 back on the back and run the pressure a tad lower than I have been.
On that note, for a 2.4 and 2.6 tire with a 130 pound rider, what pressure would you folks run? Particularly on the big chunky rocks that we encounter at Snowbasin? (Think, big, sharp baby heads, sometimes elephant heads, with some loose thrown in for good measure?) I want to run them as low as I can without killing my carbon wheels, because that extra squish and grip really helps me. I've been hearing I could go as low as 13 in the front. I ran them at 14 yesterday.