Okay, I have decided to try and find a mate to an existing tire on my SI. It is a military tire(stamped MILITARY on it) 12-24. It has long diagonal bars, Firestone, weater checked and 10-20% rubber but up and holds air. The original from 1943 as far as I can tell. I know I will never get one JUST like it but would like to find a 12-24 or 13.6-24 to put on the rear with it. I see the front tires can be got for miltary jeeps.
Anyone know what would have a 13.6-24? Salvage yards guys kind of look at you funny because it is such an odd size. Would like to find a worn old tire. In Iowa would be great but just need a lead on one. Several local tire companies didn't even call me back with pricing for new in that size. 12.4 and 14.9 are all most carry.
Will post pics soon.