With my weight and such I ride 45 – 50 p.s.i. on my bikes. I have found that the Fire XC tires do pretty well for rolling and traction. At least for me. The bike I have for more dirt I have the WTB Velocoraptors. They do pretty well on concrete and such, just rougher than the fire Xc
Well, I’m about 180, so I decided to try a bit more air — from around 30 to about 35 in front and 38 in back. I hit the trail. I fell, twice. The first time I hit a rock — probably only 4 inches high, but perpendicular; my bike stopped dead and over I went. My first partial endo. Weight too much on my hands I suppose. But maybe with a softer front tire? Second time, I was going along on a narrow track with a slight down hill on the left side and a rock knocked my front wheel down the hill and I went down to the right. Both times I’m pretty sure I would have gone down even if I hadn’t been clipped in. I think I’ll take some pressure out of the front at least. Sigh.