Best Overall Internal · 1 of 5
Truck System Technologies TST 507 Series 6 Internal Sensor TPMS System Color Display and Repeater

- Six internal sensors, repeater
- 1 to 218 psi, 115 tires
- Dedicated spare tire positions
Our take
It suits a motorhome or heavy trailer owner who wants internal sensors and room to grow.
Why it made the shortlist
The Truck System Technologies 507 Series kit is sold with six internal sensors, a color display and a repeater. The system can monitor up to 115 tires, including spares, with a range of 1 to 218 psi.
The RecPro's 203 PSI ceiling is also high, so the decision comes down to how much display flexibility you want.
Because internal sensors sit inside the rim, installation and later battery work require a tire shop, so price that service in.
What works
- Internal sensors sit inside the wheel
- Reads up to 218 psi
- Brighter color display with spare positions
- Audible, visible and text alerts
Watch out for
- Needs a tire shop for sensor installation





