View post: 2020 Lamborghini Huracán Super Trofeo EVO For Sale With 84 Miles Everyone knows that tires should be full of air to function, but how much air you should have in your tires – in other words ...

You’ll also find the recommended tire size, as well as the speed and load ratings for your vehicle, on a placard in the driver’s doorjamb, in the glove compartment, or on the fuel-filler door.

With lighter loads, you should be letting air out of your tires rather than pumping them up to improve fuel economy and tire longevity. Skillful truck drivers gear rpm to the load to save fuel when ...