Tiny gadget eases tire pressure worries California-based company Resource Manufacturing Inc. (RMI), along with Wika Instrument, the world's largest gauge manufacturer, are touting their new air pressure gauge as the answer to every lazy motorist's prayer. The patented TiroGage, which is designed to be left on, attaches directly to the tire's valve stem. The pressure reading is displayed constantly on an outer lens, which allows drivers to check their tires with just a quick glance. Air can be added or released through the gauge itself, eliminating the need for external gauges or valve stem caps. To read the entire article, go here. I for one would be concerned about having $100 worth of readily removable accessories on my tires.
