At what psi can I travel 65-75mph?
This Maxxis pdf has the same table. Using the table(s) above, my ST175/80R13 with 1060lbs load could run at a minimum 35psi with ~4% reserve capacity. Is there a +10lbs rule? I run with +1...
Forum Discussion
smkettner wrote:
+10 is a GY Marathon notation.
True.
(Add 10psi - add 10mph)
However, GY should make a notation that Marathons may (do) fail at the
proper "standard" psi, driven at the normal speed rating..:W
Of course, GY will claim (as they did in court) that the tires failed
due to any one of several operator or road hazard occurrences..:W
~
