TIRE PRESSURES AND RIDING COMFORT---IS THERE MORE TO THE STORY?
Using online tire pressure calculators, pressures for front/back on my wheels have been calculated at 60/65, 70/75, and 80/85 psi. The Bontrager site recommends 90-120 psi ( https://trek.scene7.com/is/content/T..._Pressures.pdf). [The bike is a Trek 970 (all Columbus tubing steel) with Bontrager Paradigm 19.5 mm rims (internal width), Bontrager R2 (Hard Case-Lite) 25c tires (puncture resistant with stiff sidewalls), Cinelli handlebars (stiff for racing/hill climbing), and a Brooks Profession leather saddle with steel rails.]
The 70/75 psi combination provides the "15% squish" recommended by many as providing the optimal rolling-resistance/rider-comfort combination.
Although the latter are subjective, maybe trying out different pressure combinations rather than accepting one recommendation is prudent???
And does riding speed play a role?
Maybe a non-linear, frame-fork-spring rate resulting in a more relaxed deflection and "shock-absorption" with a faster velocity and perhaps also the result of a lesser impact angle.
Using online tire pressure calculators, pressures for front/back on my wheels have been calculated at 60/65, 70/75, and 80/85 psi. The Bontrager site recommends 90-120 psi ( https://trek.scene7.com/is/content/T..._Pressures.pdf). [The bike is a Trek 970 (all Columbus tubing steel) with Bontrager Paradigm 19.5 mm rims (internal width), Bontrager R2 (Hard Case-Lite) 25c tires (puncture resistant with stiff sidewalls), Cinelli handlebars (stiff for racing/hill climbing), and a Brooks Profession leather saddle with steel rails.]
The 70/75 psi combination provides the "15% squish" recommended by many as providing the optimal rolling-resistance/rider-comfort combination.
Although the latter are subjective, maybe trying out different pressure combinations rather than accepting one recommendation is prudent???
And does riding speed play a role?
Maybe a non-linear, frame-fork-spring rate resulting in a more relaxed deflection and "shock-absorption" with a faster velocity and perhaps also the result of a lesser impact angle.
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