On subject of tubes can I achieve 50psi on 32c with normal tubes?
Yes. Lower if you want.
I put 40psi in for the cross bike (w butyl toobs). Sometimes less when racing. Don't try and ride over Cotswold stone walls though (cough).
alright sold on butyl for commuting; which tyre tho .. pasela is nice but pricey .. £50-ish for a pair 700cx32mm, doesent ride like a stone (think marathon plus).
@amey started
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Yes. Lower if you want.
I put 40psi in for the cross bike (w butyl toobs). Sometimes less when racing. Don't try and ride over Cotswold stone walls though (cough).