TST TPMS 507 System and valve stem Question
I just ordered the TST TPMS 507 RV system for our Sunset Trail 20CK travel trailer. (4 sensors) I had read online, their website actually, that they recommend metal valve stems. When I called and aske...
Forum Discussion
I recently purchased the TireTraker system and was disappointed to find that its sensor also weighs 12g/0.42oz, despite the numerous 0.3oz claims on their website.
Why such concern over a tiny fraction of an ounce? Because at 65mph the centripetal force is nearly 3 pounds! That's quite a load on a rubber valve stem. I looked into bolt-on metal stems to replace my rubber ones, but unfortunately, my alloy rims just won't accommodate them. So I had to accept the high pressure snap-ins instead.
By the way, the TST flow-through sensors weigh twice as much and thus exert twice the force on the stem---nearly 6 pounds. Centripetal force is proportional to the square of the speed, so slowing down helps immensely. Conversely, driving over 65 is just asking for trouble.
Why such concern over a tiny fraction of an ounce? Because at 65mph the centripetal force is nearly 3 pounds! That's quite a load on a rubber valve stem. I looked into bolt-on metal stems to replace my rubber ones, but unfortunately, my alloy rims just won't accommodate them. So I had to accept the high pressure snap-ins instead.
By the way, the TST flow-through sensors weigh twice as much and thus exert twice the force on the stem---nearly 6 pounds. Centripetal force is proportional to the square of the speed, so slowing down helps immensely. Conversely, driving over 65 is just asking for trouble.
