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English = Tyre
American English = Tire, which to us means get tired ! As in after exercise or before sleep ��
All tire pressure are advertised at the international standard 20C temperature. You gain or lose about 1.5 PSI for each 5C change in temperature. So if the bike says styrene should be 40PSI then that’s at 20C ambien. So 0C ambient is -20C from that point,which is 4x1.5psi or minus 6psi, so going 6-8psi lower than the 20C setpressure is actuallykeeping the pressure correct !
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