:agree: I run 40-41 on front. 30 (low end before adding air) 32 (high end after adding air) on rear, pretty much leave it there whether I'm riding one up, pulling the trailer or riding the twisties. I find 28 to be just a bit too squirmy on me for my style of riding, especially when powering out of a corner. Since I'm not a canyon carver, don't feel the need to bump it up to 34 for the twisties - the more aggressive riders like 34 in the twisties. Run much more than 30-32 and you will wear out the center much faster.