Dry rot and sidewall cracking indicate clear problems with a car’s tires. When the air pressure drops incredibly low, another visual cue presents itself. However, treadwear and low tire pressure might not always be so evident. Checking on these things helps reduce the chances of potentially serious problems.
Tread refers to the rubber that contacts the road. Use wears treads down, and poor alignment and other issues could wear treads down ahead of schedule. Low treads mean reduced traction, which can be dangerous. Drivers need to replace tires when treads get too low.
Tire pressure refers to the recommended psi. When psi is too low, everything from reduced fuel economy to increased treadwear is possible. Overinflated tires come with a blowout risk. Underinflated tires may blow out, too. Check the pressure level and add or deflate air as necessary.