Original Tire Size?

[3 Speed]

After looking at all the threads on tires, I wonder what current size most matches the original for a 67 F100.

I put 215/75R15 Firestone 380 whitewalls on my truck, figuring I would work less to turn the manual steering. I also assumed my original owner may have asked for the whitewall option for his new Custom Cab.

[timmytim]

I dont know the orginal size but I do love white walls. I dig a flat black,olive green, or rusty rat rod with white walls!!