Tires are arguably the least interesting part of your car. They’re round, black, expensive to replace and generally disappear into the background of your ...

With that in mind, Harley Davidson recommends a cold tire pressure of between 32 and 42 pounds per square inch (PSI), depending on tire size.

Your car can tell you when your tires have low air pressure, but there are different kinds of sensor to do that. Here are the different types and how they work.