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
dspencer;
The whoosh refers to the missing of the actual topic, that is, where is this +10psi rule that allows an ST tire to travel up to 75mph.
I would be happy to drive 65mph if I had a tire with a higher rating, but, the 65mph limit is just wrong.
One thing is for sure, driving a 65mph tire at its limit leaves no reserve capacity. I have 22% reserve load capacity at 50psi. Apply that to 65mph and I suppose I would need to travel 48mph.
Happy Trails;
HTH;
John
The whoosh refers to the missing of the actual topic, that is, where is this +10psi rule that allows an ST tire to travel up to 75mph.
I would be happy to drive 65mph if I had a tire with a higher rating, but, the 65mph limit is just wrong.
One thing is for sure, driving a 65mph tire at its limit leaves no reserve capacity. I have 22% reserve load capacity at 50psi. Apply that to 65mph and I suppose I would need to travel 48mph.
Happy Trails;
HTH;
John
