Originally Posted by
1989Pre
Branko_76:
I'm running Super Champion Modele 58's, which are straight-wall. IRC Special Tyres are rated at 85psi, and that's what I inflate them to. These must have been their base model in maybe the late 70's-early80's. I'm just getting back into using 27", last time being 1985. I've been able to find IRC as N.O.S., but these Special Tyres are really heavy. Their Roadlite gumwalls are lighter and Roadtour somewhere in between.
I am recalling the Super Champ Mod58 rims having quite-defined bead hooks, capable of retaining folding tires. I know of no exceptions and this was a popular rim for use on tandems (i.e. highest pressures).
So I am curious as to what your definition of "straight-wall" is(?).
NOS tires will not be a good choice for durability, performance or reliability. They wear fast and tend to come apart.