My '77 9C1 came equipped with Firestone 125s in this size. They were COPO order code 5FF and referred to as "Fabric Belted Radials." They are belted with Aramid, which some call Kevlar (must be a trade name thing). I have the original 4 in the basement and the never down spare in the trunk. I plan to mount them on the original rims for show and run rallies elsewhere.I also have an old road test of the 76 9C1 Cop Nova, it says that either FR70-14 radials or E70-14 belted bias tires were available. I'venever seen an original car with those though.