No. It often decreases.
Tire pressure is the one main variable that determines pavement wear. It is highly regulated for heavy vehicles. Those have to compensate by using wider tires or more wheels.
Comment on Why do tires have the width and diameter they do?
NeatNit@discuss.tchncs.de 1 week agoWhen the vehicle weight increases while tire PSI stays the same, the contact patch (area squished flat against the pavement) increases in size.
If the vehicle gets heavier, doesn’t the tire pressure increase?
marcos@lemmy.world 1 week ago
Elting@piefed.social 1 week ago
Yeah I think in that case they had meant to say that the amount of air in the tire stays the same and the PSI increases when the tire deforms. They are right that the PSI in the tire has to match the pressure on the road, that can only happen if the PSI increases when you increase the load.