Originally Posted by papap
Do you have to install the steel stems for the TST system?
These are highly recommended in any case; but for a TPMS they are almost mandatory. With the pressure cap in place the centrifugal force at 60 MPH will bend the rubber ones until the cap touches the rim. This is VERY hard on the stem and the pressure cap.
I took mine off completely because the TPMS (supplied as a VERY expensive option) was bending the rubber stem to the point it was leaking. I now have steel stems, but never bothered to put the supplied TPMS caps back on because they only alerted at 25 PSI. Since I had C rated tires running 50 PSI (before I upgraded to D rated ones) they were damn near useless. 25 PSI is a blowout already happened.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW