A tyre valve cap is a compact cover that fits over the valve stem of a tyre. Its primary function is to keep out dirt and moisture, which can corrode the valve and cause air loss. Typically made from durable materials like plastic or metal, these caps are essential for maintaining proper tyre pressure and preventing potential tyre damage. They come in various designs, from simple and functional to custom styles that can add a personal touch to a vehicle’s wheels. Easy to install and remove, they are a small but critical component in tyre maintenance.