New TPMS at the start of this trip, so far 4200 miles with rubber valve stems, non-flow through sensors. I didn't have time to change to metal stems before leaving on this trip. No noticeable indications of anything wearing or rubbing so far. Now I guess I will change to metal stems when I need new tires, unless I see something that makes me think otherwise.
2016 Windjammer 3006WK
2010 Dodge Ram 2500, 4x4, Diesel, Front Hitch, Air Lift 5000 Rear Air Bags, (not really used, left over from our truck camper). Equalizer E4 1.4k/14k WD Hitch. TST 507 TPMS. Furrion FOS48TA Observation Camera. Garmin RV-760 GPS