You'll need just one item: a tire pressure gauge. For just a few bucks, the classic pen-style tire gauge is easy to throw in the glovebox, or you can purchase a dial or digital tire gauge. Let the ...

This 3-in-1, 12-volt-powered set features a voltmeter, water temp, and oil pressure gauge all on white faces. There are no warning lights, however, so you’ll have to pay attention to the needles.