Also, the bike has rotted Mitsuboshi Silver Star 27 x 1-1/8". They appear to be cloth/thread sidewalls. I have read about tires with a sidewall TPI (thread per inch) count. Were these tires an exposed thread or were they gumwalls that the gum has deteriorated and fallen away from? There doesn't appear to be any gum residue to be found. 1981 Fuji catalog lists Silver Stars as the factory installed tire. I would not be surprised if these are the OEM tires. The bike shows little evidence of wear, misuse or abuse. Just a lot of dormancy.