Originally Posted by
m907
Is it standard practice for National to way over-inflate their tires? I've had several rentals where I picked the cars up and found they were at 40-45 psi, when the requirement was 30-35.
The tire pressures shown on the driver's door jamb - for everything sold in the U.S. - are a recommendation, not a requirement. There are two requirements:
- that cold pressures not exceed the max molded on the tire's sidewall
- that pressures are adequate to carry the load of vehicle and cargo at expected speeds and ambient temperatures
40-45 psi might leave you with a stiff riding car. It may well not be outside of requirements.