What should tire pressure be with heavy load?

If you have a heavily loaded vehicle, up to 44 or even higher is ok if the tire allows it, but this is a little high for most vehicles. An exception to this would be with extra wide, low profile tires. They tend to naturally wear more in the middle, so caution should be used when going over 35.

Should I inflate my tires to max load?

RAY: Under no circumstances should you inflate your tires to maximum pressure. Not only will you risk a blowout, but you’ll diminish your ability to control the car because your handling and braking will be much, much worse.

Is it better to have higher or lower tire pressure?

Low tire pressure always is more dangerous than high tire pressure. Higher pressure generally is not dangerous, as long as you stay well below the “maximum inflation pressure.” That number is listed on each sidewall, and is much higher than your “recommended tire pressure” of 33 psi, Gary.

Does psi increase with weight?

If the weight on a tire is heavy enough that the tire deforms then the pressure would increase with added weight. Since the volume of the tire does not change when under a load (only the shape) the pressure does not increase. In an extreme situation you may see an increase of around 1 psi.

Should I run my tires at max psi?

Most passenger cars will recommend 32 psi to 35 psi in the tires when they’re cold. Do not inflate your tires to the pressure listed on the tire itself. That number is the maximum pressure the tire can hold, not the recommended pressure for the vehicle.

How important is tire pressure when loading?

The tires are designed to “pressure up” (if you will) when a load is exhibited upon them. With the proper tire pressure before loading, if you do not go past the tires load rating, you shouldn’t have to worry about the pressure of the tire it is designed to take it.

What happens if you over pressurize your tires?

As @DanMantyla stated in his very good answer, over pressurizing the tires is not a good way to go either. Too much pressure can cause a blowout. The tires are designed to “pressure up” (if you will) when a load is exhibited upon them.

Can you put too much weight on a tire?

Each tire is designed for a certain weight carrying capacity. If you exceed the weight limits for that tire you are risking your own safety from the possibility of a blow out. In most cases yes but follow professional guidelines and never exceed the maximum cold rated pressure on the side of the tire.

How much should the rear tire pressure be on a truck?

Usually the recommended pressure on the sticker is for max load, you can safely reduce the rear tire pressures when unloaded but only slightly. Passenger tires on pickups (P tires) should never be more than 5psi low for any reason, LT tires can still perform adequately at over 15psi low but vastly depends on the model truck and tire profile.