While ridding in Wayne National forest about 3 weeks ago I had several bad crashes in the mud. I have ridden there before in muddy conditions and never had that much of a problem. At Wayne it is clay mud and can be very slick. My book says to run the tire pressure from a low of 12lbs to a high of 15lbs. I was running at 14 and my ridding buddy says I crashed so much because my pressure should have been 9 or 10 pounds. By the way, after about 1 hour of mud we rode for the next 40 miles with no problem. How low of pressure can I run in the rear and should the pressure be the same for front and rear?