What is the factory tire size on a 1963 Ford F100?

There's no single answer to the factory tire size for a 1963 Ford F100. The tire size depended on several factors, including the specific model (e.g., different options for wheelbase and payload capacity), and whether it had optional equipment affecting tire size.

To find the correct original tire size for *your* specific 1963 Ford F100, you need to check:

* The original owner's manual: This will specify the factory recommended tire size(s).

* The doorjamb sticker (if still present): Many vehicles had stickers on the doorjamb with tire size and other important information.

* The spare tire: The size stamped on the spare tire is often a reliable indicator.

* The rims: The rim size will dictate the appropriate tire size.

Without these details, it's impossible to say definitively what the original tire size was.