HIGH ACCURACY: Every ETENWOLF's pencil tire gauge is calibrated to ANSI B40.1 Grade B, it is accurate to 2% of span in the middle 50% of range and 3% of span in the lower and upper 25% of range. Each ...

This article was updated in December 2025 with new information. Maintaining optimal tire pressure on your vehicle has a plethora of benefits, including reduced tire wear and improved gas mileage.

Add Yahoo as a preferred source to see more of our stories on Google. Consumer Reports has no financial relationship with advertisers on this site. It’s important to keep your car's tires properly ...

I've had one of those pen-style pressure gauges all my life but suddenly the eye-balling of the pop-up black line of PSI isn't good enough. My car is so sensitive it needs exactly 44 PSI or I get a ...