Anyway, when you see a green cap on the air valve of a tire, that means those tires take nitrogen versus regular, 'ol air, according to the Family Handyman website.

To protect these valves, dust caps (also known as valve caps) are fitted over their ends. Although they are a relatively inexpensive car accessory, dust caps play a crucial role in vehicle safety.

During pre-race inspection, officials discovered that Majeski’s valve stem caps were illegal as per NASCAR’s rules; the No. 98 lost its crew chief for the weekend, it lost points, and Majeski ...

Wouldn't it be handy to have a set of valve caps that change color with pressure? This concept has been around for some time, but now a company called RightPSI says it has a new and better design ...

Retailers have reported a spike in anti-theft dust cap sales since activists like the Tyre Extinguisher group have risen to prominence. Anti-theft dust caps, also known as valve caps, include a ...