I used to Inflate the First set of Michelin Xs I Owned to the Max PSI figure
ON THE TIRE SIDEWALL. 35 PSI
Foolishly, believing I'd get the best Fuel Mileage And Most Longevity of Tread.
Well,I did.
That SD regularly enjoyed 27MPG in mixed driving,with not a few JackRabbit starts.
The Michelin Xs (80,000 mile treadwear warranty from Michelin) still had usable
tread at 120,000 miles.

BUT,If I'd gotten "In a Tight Place" in an emergency the Tires might have shown
all that High Pressure Running to me in a way I'd have regretted.

__________________
'84 300SD sold
124.128