Most flat tires are caused by underinflation. This little cap may help you quickly identify when you need to inflate your tires.
These little tire caps give you a visual (Traffic light-colored) indicator of the pressure within the tire.
Green: Shows that tire pressure is normal.
Yellow: Shows that the pressure is down about 5 pounds.
Red: Alerts you that the pressure is down by at least 10 pounds.
Simple installation by just replacing the black cap with the indicator cap.
Please Note Prices are for 2 x Caps (or a single pair)