I added air in my tires. Never looked low so didn't give it a thought. Checked them the other day, dial gauge was reading 15 psi. Thought it couldn't be true, my Jeep tires look noticably flatter at 15psi. Figured the gauge had to be wrong so chucked it. Bought a digital gauge, checked the tires this morning, 15psi. Couldn't believe it. They looked like my Jeep tires at 35 psi. Filled to 32 psi, ride is so much better. Guess I shouldn't have thrown on the old gauge the day before trash pickup.