RCMAN46 wrote:
X2 on the metal valve stems for the higher pressures with our without the TPMS.
I tried the 507 TST flow through. When mounted I was concerned I would drag them off if I ever got into deep mud or snow. I returned them for the standard sensors.
Metal valve stems also come in different lengths. For the TPMS get the shortest length you can.
Well, not necessarily the shortest. I got some all metal stems put on at the tire store one time, and I just barely could get the TST monitor screwed on. Then the first time I needed to add air, I discovered that the air chucks would not fit on because the stem was so short! Not enough clearance next to the rim. I had to go back and get longer ones put on.
I wrote to TST recently to ask if the high pressure valve stems would be ok for my 510 system monitors, and they said yes. The high pressure stems, if I understand correctly, are metal with a rubber surround for most of the stem's length (one can see the brass-colored metal for perhaps 1/4" or so near the outer end). The tire stores around here seem to all stock the high pressure stems, but often they have to run and get the all metal stems from some supplier warehouse, so the high pressures would be more convenient.