Tire width defined

"Tire width," when applied to pneumatic tires, shall mean the diameter of the cross - section of such tires as customarily measured and rated by the manufacturers of motor vehicles and tires. Source: SDC 1939, § 44.0336 (6) (e) as added by SL 1943, ch 158, § 2; SL 1947, ch 192; SL 1953, ch 234; SL 1957, ch 223, § 2; SL 1959, ch 260, § 2.