For all my home base pedantry, I almost never check pressure during a ride unless I think I have a flat. Years ago, when I was living in Downieville, Mark Weir took tire pressure obsession to a whole new level in his pursuit to dominate that race. He had an elaborate matrix written out, factoring in the pressure difference induced by the DH race starting 5000' uphill, as well as the usual 30 or so degree temperature swing that morning riders could encounter.
Feb. 10, 2022, 9:18 a.m. - Mike Ferrentino
For all my home base pedantry, I almost never check pressure during a ride unless I think I have a flat. Years ago, when I was living in Downieville, Mark Weir took tire pressure obsession to a whole new level in his pursuit to dominate that race. He had an elaborate matrix written out, factoring in the pressure difference induced by the DH race starting 5000' uphill, as well as the usual 30 or so degree temperature swing that morning riders could encounter.