The Stovebolt Site Forums The Parking Lot '60-'66 Trucks Tires for a 1964 C30 Dually

Just a note; you can't use ford wheels. Your truck has hubs machined for a 4.56" hub bore, and dually wheels are hub centric. Ford wheels will physically bolt up, but use a much larger 4.88" hub bore.

FWIW, GM also started using a 4.60" hub bore in 2001.

Also, (AFAIK) some 235/85r16's will work, and some won't. Lots of debate on the subject; just google "235/85 dually" . The general consensus seems to be that most will work OK, but will rub under heavy loads.