Originally Posted by
ramzilla
My rule of thumb for all tire sizes: one week.
+1 I have followed this rule of thumb 7 days per tire for over 220,000 miles. Do the tires lose some air over 7 days, yes, does it negatively affect their performance, not in my experience. Road bike tires, 85 psi rear and 70 psi front. Has served me well. IMOP people get too anal over their tire pessure.