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My old 1974 Schwinn Varsity had rim brakes and came stock with 32mm (1 1/4") tires. Also of note is that it had hookless rims. These tires had a maximum pressure of 65 psi - and if you look at the latest ISO standard for hookless rims, the current maximum allowed pressure in 32mm tires on hookless rims is 450 kpa = 65psi. Just another example that what comes around, goes around, in the bicycle world.
Last edited by Mark McM; 03-03-2024 at 11:42 AM.
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