"Great tool to keep in your glove compartment," wrote a fan. "Even if your tires look like their pressure is OK, this tool ...

That makes them easier to read than the scale on a stick-type gauge. Some digital readouts light up. That's handy for checking pressure in low-light conditions. Dial gauges, the other main type ...

That makes them easier to read than the scale on a stick-type gauge. Some digital readouts light up. That's handy for checking pressure in low-light conditions. Dial gauges, the other main type ...