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umop3pisdn-
80psi
That seems a bit high for somebody @krikov 's weight, I'd probably start at 70F/80R and work down. It does depend on factors not in the original question, such as tyre carcase construction, road conditions and rider preference.
gbj_tester
Does anyone have a link for a decent tyre pressure calculator?
(75kg rider, 9kg bike, racing 5 LG 23mm wheels, 25mm tyres)