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Since I run 99% of the time on macadam with 700C x 35 tires I use 85 psi even though the side wall says 75 psi. My shop air compressor is set to cut off at 90psi. Try experimenting with increments of 10 psi.
Years ago I met a Bible teacher from Liverpool by the name of Charles D. Alexander. He liked his car and told me, "My old car goes right fast. Sometimes the younger fellows try to pass me but I don't always let them."
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