Do I need to upgrade to metal valve stems to use TST?Updated a month ago

The cap sensor system that AIR GEAR includes with TST tire pressure monitors does not require upgrading your valve stems. You can install cap sensors on the metal/rubber valve stems that came with your RV. 

However, if you wish to upgrade to all-metal (steel) stems at your next regular tire change, there's no problem with that. 

Cap Sensors vs. Flow-Through Sensors

If you have a motorhome with metal valve stems, cap sensors are an appropriate solution, but for ease of adding air to the tires, you may choose to purchase flow-through sensors instead. You can purchase these directly from TST.

NOTE: We only recommend "flow-through" sensors for motorhomes that have metal valve stems. Metal stems are required for flow-through sensors.