Handling, grip, ride quality, and tread wear are just a few of the things affected by tire pressure, and in order to take accurate measurements, you need a decent tire gauge. At one end of the spectrum are pencil-type gauges—good for ballpark readings, if that—and at the other end are big-bucks professional units. So, what to buy? When I was faced with this question nearly a decade ago, my adolescent’s income steered me toward a $14.50 Accu-Gage from G.H. Meiser & Co.