The AASHO test comes up frequently, but there’s an easier way to evaluate this: What’s the internal pressure required to inflate the tires? The higher it is,

The AASHO test comes up frequently, but there’s an easier way to evaluate this: What’s the internal pressure required to inflate the tires? The higher it is, the smaller the contact patch and the more damage it will inflict on the road. Large trucks are between 80 and 100 PSI, while your typical passenger vehicle is going to be 35 PSI or under.