My weight is probably 175 with all the crap I carry on my back. Damp-30 up front in 2.35 Kinetics, 35 out back in 2.1 WTB V-raptors. Dry and dusty, 35-40 (depends where I'm riding) up front, 40-5 out back. Urban stuff, 40 up front (never know when you're going to drop in on some gravel or mulch) 50 out back.