TPMS and Rubber Valve Stems

I used the TST on my TT with rubber valve stems for a few thousand miles without problems. But it bothered me that the TPMS head was rubbing on the wheel while under way, so I had metal stems installed.

I used TST TPS on my Jeep Wangler. It has factory TPS. The two system works good. The Jeep has rubber valve stems.

I'm not sure about stacking another TPMS on top of the valve stem that already has a built in TPMS. Not sure how or if that works. As mentioned, some of the new factory TPMS systems are on rubber valve stems.

Many car manufac have switched to the rubber stem with the TPMS, many issues with the plastic cap model.

We used our TST TPMS sensors on our previous toad's stubby rubber stems for about 30,000 miles with no problems. Longer stems might be an issue though.