TST 507 Series Tyre Pressure Monitoring System (4 Cap Sensors & Colour Display)
A slow leak on tow is rarely dramatic until it suddenly is. The TST 507 puts a real-time number on every tyre so a problem shows up on the display long before it shows up as a thump on the side of the road.
Key features
- 3.5-inch rechargeable colour display with real-time pressure and temperature per tyre
- Audible and visual alerts for high and low pressure, with user-adjustable thresholds
- Expandable to monitor up to 110 tyres across multiple trailers
- Cap-sensor or flow-thru sensor options, depending on valve stem type
RV use case
This suits anyone towing a caravan who wants an early warning of a slow leak or an overheating tyre, particularly on longer or more remote trips where a roadside tyre failure is a bigger inconvenience than it would be closer to home.
Pros
- Catches slow leaks well before they become visible or become a blowout
- Expandable enough to cover the tow vehicle, caravan, and a second trailer if needed
- Cap-sensor installation is straightforward, with no in-tyre work required
Cons
- Cap sensors are exposed at servos and rest stops, and worth keeping an eye on
- Sensor batteries need periodic replacement
- Display itself needs charging like any other rechargeable device, which is one more thing to remember
Best for
Anyone regularly towing a caravan on longer trips, especially remote or outback travel where a tyre failure carries more consequence.
Verdict
Cheap insurance against an expensive problem — a slow leak caught early on the display is a blowout avoided on the highway.
TST 507 Series TPMS colour display and cap sensors
Close-up of the colour display showing pressure and temperature readouts
Close-up of the cap sensors and specifications
Retail packaging box