The P235/75R15 XL (for extra load) tires are getting harder to find, but they're out there. All of the ones I've come across in the last couple of years are made in China. With this recent tariff on imported Chinese tires, you better move fast before the price goes up! Even though my '75 M-M is still in the shop getting paint/body work done, I went ahead and had one of my tire guys order a set when I heard about the tariff. He found some Kuhmo's for just under 390.00 mounted and balanced. A couple of folks at the Flint meet had Kelly-Springfields in this size.