TPMS
03-15-2005, 06:01 AM
#2
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I've always wondered that
You would think they would be dead on being that they are electronic.....but really wonder....all it takes is a reading with a hand held gage to determine.
03-15-2005, 07:31 AM
#5
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I've found that they are fairly accurate. Temp difference?
I use a hand gauge when inflating the tires and afterwards the TPMS will be reading w/n a half a psi. You will notice the pressures change with temperatures. So Greenie is really losing any air in the cold, it's just shrinking ;-)
Check the pressures when cold, then see how much it changes after driving. The heat generated in the tires from driving will increase the tire pressure several psi (YMMV).
Check the pressures when cold, then see how much it changes after driving. The heat generated in the tires from driving will increase the tire pressure several psi (YMMV).
03-15-2005, 09:16 AM
#7
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I have also found the TPMS to be quite accurate. In fact, I notice
that the variance in pressures is sensitive to extent that when the car is sitting, the temps on the wheels in the sun will be a little higher than for the wheels in the shade.