They are not that old and sound like the era the 10's were from. Currently have Hoosier 28x11.5 tires mounted. I bought them from a racer that likely had them custom made as most of his stuff is top flight. They have a 5 inch BS and were on his Mustang Drag Car. I beleive Hoosier measures the side wall regarding the 11.5 as the patch is right at 10. Maybe I should not have used the day 2 term as this is your world lol. I am in GM territory trying to get my correctly restored 68.5 to look like it did a few years after the sale and was raced. I really like your Day 2 theme here and trying to cross. reference to my Mustang. To be technically correct some White painted rears with Keystones would be more fitting like many of the lightweights but some did use the Cragar SS. I ran G60 Polyglas before the resto but bored with this particular rim and the F60 is not cutting it anymore.