The OnTrack External TPMS Sensors provide real-time tyre pressure and temperature monitoring without the need for internal sensor installation. Designed for drivers running aftermarket wheels, multiple wheel sets or track-focused tyre setups, they offer a simple, removable solution for advanced tyre management. Instead of removing tyres or unseating beads, the external sensors screw directly onto standard Schrader valve stems in place of the existing valve caps. Once paired with the OnTrack iOS app, they deliver live pressure and temperature data with an approximate 4-second refresh rate, helping drivers monitor hot pressures and react to changing tyre conditions quickly. Custom baseline pressure settings allow users to run non-OEM tyre pressures while reducing the risk of unwanted TPMS warning lights. This makes the system particularly useful for track day drivers, performance car owners and anyone switching between road wheels, track wheels or different tyre setups. Built for high-speed use and developed with motorsport input, the sensors are lightweight, durable and designed to stay secure under demanding conditions. Battery life is up to 1 year, with easy replacement when required. Compatible with any vehicle using standard Schrader valve stems, including BMW and Porsche models, this external TPMS kit is a practical choice for drivers who want fast, accurate tyre monitoring without the hassle of internal installation. The package includes 4 external wireless TPMS sensors and access to the free OnTrack iOS app download. Further information below.
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