First, Ford tire suppliers were from Firestone, Ford, and Goodyear with B.F. Goodrich later on. The N-tractors began on the 9N with 8 x 32 rears and the single rib 4 x 19 fronts. Soon, 10 x 28 rears (now labeled 11.2 x 28) were offered and stayed as OEM up through the NAA. Harvey Firestone and Henry Ford were good friends ever since they first met when Henry was building his first auto and Harvey was making bicycle tires. They remained friends their entire lifetime and began the "Four Vagabonds" a "millionaires" club though they didn"t call it that, with their buddies Thomas Edison and John Burroughs, taking numerous camping trips around the USA for many years. Henry Ford"s only [legal] offspring was Edsel Ford and he had four children. Henry Ford II and William Clay Ford were two of them. One got a car company, the other got a football team [Detroit Lions]. William Clay Ford married Harvey Firestones daughter, Josephine in 1947. A son from them, William Clay Ford II is the current Ford CEO, known as Bill Ford Jr. and he is now the owner of the Lions as well.
Tires -well if your BF"s are good and match, stay with them. I"d get the fronts to match too so either get a pair of single ribs -if you intend to do some plowing -or go with the three rib style but the better they match the better on your steering and front end. New ones can be found at places like Miller Tire and often the 4 x 19 fronts are sold at TSC.
Tim "PloughNman" Daley(MI)