Tire PSI
on my 2016 Ford F350 superduty dually 4x4 with Goodyear LT 245/75R/17E tires. The Door sticker says 75 front 65 rear cold. Tires say 80 PSI cold. Pardon my ignorance, but which one do I go b...
Forum Discussion
It is not just weight carrying that the 'recommended' PSI listing
on the tire's sidewall and various documentation from the OEM
Weight rating is just one aspect of it and IMHO, it has to do with
keeping the tire's shape during all aspects of it's duties
Keeping its shape as in not folding or rolling over during a curve at
highway speeds
Keeping it within the temp range it is designed for. Both at the speed
rating and weight rating
Keeping the contact patch within spec's for acceleration, cornering
and braking
Keeping its ability to absorb shocks at max speed is another
As are *ALL* of the 'recommendations' for 'that' tire. On that, the
vehicle door label is specific only for 'that' tire listed on that
label. Those who re-engineer by changing the class and size of the
tire needs to know what they are doing. Ditto the rim width vs the
tire OEM's 'recommendation' for that tire...etc, etc
on the tire's sidewall and various documentation from the OEM
Weight rating is just one aspect of it and IMHO, it has to do with
keeping the tire's shape during all aspects of it's duties
Keeping its shape as in not folding or rolling over during a curve at
highway speeds
Keeping it within the temp range it is designed for. Both at the speed
rating and weight rating
Keeping the contact patch within spec's for acceleration, cornering
and braking
Keeping its ability to absorb shocks at max speed is another
As are *ALL* of the 'recommendations' for 'that' tire. On that, the
vehicle door label is specific only for 'that' tire listed on that
label. Those who re-engineer by changing the class and size of the
tire needs to know what they are doing. Ditto the rim width vs the
tire OEM's 'recommendation' for that tire...etc, etc
