(A) No vehicle, load, object, or structure having a maximum axle load greater than 16,000 pounds when such vehicle is equipped with solid rubber tires shall be operated or moved upon the improved public highways, streets, bridges, or culverts. The maximum wheel load of any one wheel of any such vehicle shall not exceed 650 pounds per inch width of tire, measured as prescribed by § 71.60, nor shall any solid tire of rubber or other resilient material, on any wheel of any such vehicle, be less than one inch thick when measured from the top of the flanges of the tire channel.
(B) The weight of vehicle and load imposed upon the road surface by any two successive axles, spaced four feet or less apart, shall not exceed 19,000 pounds for solid tires; or by any two successive axles spaced more than four feet but less than eight feet apart shall not exceed 24,000 pounds for solid tires; or by any two successive axles, spaced eight feet or more apart, shall not exceed 28,000 pounds for solid tires; nor shall the total weight of vehicle and load exceed, for solid rubber tires, 28,000 pounds plus an additional 600 pounds for each foot or fraction thereof of spacing between the front axle and the rearmost axle of the vehicle; nor shall the weight of vehicle and load imposed upon the road surface by any vehicle equipped with solid rubber tires, exceed 80% of the permissible weight of vehicle and load as provided for pneumatic tires.
(C) Notwithstanding any other provision of law, when a vehicle is towing another vehicle, such drawbar or other connection shall be of a length such as will limit the spacing between nearest axles of the respective vehicles to a distance not in excess of 12 feet and six inches.
(R.C. § 5577.041)
(D) Whoever violates the weight provisions of this section shall be fined $25 for the first 2,000 pounds, or fraction thereof, of overload; for overloads in excess of 2,000 pounds, but not in excess of 5,000 pounds, the person shall be fined $25 and in addition thereto $1 per 100 pounds of overload; for overloads in excess of 5,000 pounds, but not in excess of 10,000 pounds, the person shall be fined $25 and in addition thereto $2 per 100 pounds of overload, or imprisoned not more than 30 days, or both. For all overloads in excess of 10,000 pounds the person shall be fined $25, and in addition thereto $3 per 100 pounds of overload, or imprisoned not more than 30 days, or both. Whoever violates the weight provisions of vehicle and load relating to gross load limits shall be fined not less than $100. No penalty prescribed herein shall be imposed on any vehicle combination if the overload on any axle does not exceed 100 pounds, and if the immediately preceding or following axle, excepting the front axle of the vehicle combination, is underloaded by the same or a greater amount. For purposes of this division, two axles on one vehicle less than eight feet apart, shall be considered as one axle.
(R.C. § 5577.99(A))