The University of Maine suggests using this formula to calculate heating costs: cost per unit times 1,000,000 BTUs/BTUs per unit/efficiency. This formula gives you the fuel cost of 1,000,000 BTUs of heat.The average home requires 50,000,000 to 150,000,000 BTUs of heat each winter according to the U.S. Department of Agriculture.his formula gives you the fuel cost of 1,000,000 BTUs of heat. The average home requires 50,000,000 to 150,000,000 BTUs of heat each winter according to the U.S. Department of Agriculture.
A trailer tireâs load rating refers to how much load the tire is designed to carry at its industry specified pressure. Trailer tires should always be inflated to the maximum psi rating as indicated on the tire. If under inflated, a trailer tireâs side wall will build up more heat faster and cause the tire to fail. This is why trailer tires are designed to have thicker sidewalls â so that they can handle more vertical load.
Special Trailer tires. Special Trailer (ST) tires are designed for your trailerâs requirements. Their stiff sidewalls help prevent your rig from swaying. Their heavy-duty load capacity is critical; ST tires have 10% more load capacity than equivalent light truck (LT) tires, and 40% more than passenger car (P) tires.