I agree with Turborob. Pressure related to temperature is very forgiving for something like the fat tired tw. Now don't take this advice for your 10 ton motorhome in deciding between 45 and 95 psi because that will blow the tires off the rig after a few hours. But riding the TW a bit soft is no big deal especially if you compensate for the softer pressure with a slow down and less drastic cornering. You can tell the difference between 18 and 25 on wash board roads and between 10 and 18 on the highway but neither is going to do major damage unless you are ramming it at 65 plus with the 10 psi tires and then you might be more like to skid out on a corner or hit a death wobble after a major chuckhole. Bottom line, if you psi is not correct for the riding conditions, slow down and don't take any chances that you are challenging the rubber on the road. My humble perspective.