The tire pressure alert valve cap is a small and simple device that will start to blink when your tire pressure falls below  4 PSI  below the correct pressure. It is an active warning , which  will be seen by the driver as she/he approaches the vehicle .

The Tire pressure alert  valve cap is designed to replace the regular dust cap on a pneumatic (sir filled) tire. Therefore it  will fit most passenger cars, pick  up trucks, large truck, tractor trailers forklifts and motorcycles. The valve cap is small (approximately 1"x1/2" ) and weighs onlu.3 oz . This will have virtually no impact on the wheel balancing or on the appearance of the vehicle. It is however recommended that the device be place on motorcycle wheels prior to balancing tires .

$37 per set of 4