Quote:
Originally Posted by Chance
Not sure what you mean by simple math, but I think a temperature rise from 70 to 90 F should not make the pressure go up more than a few PSI (much less than your 20 PSI difference).
I’m not familiar with your sensors, but would imagine that reading the correct pressure is easier than reading the actual tire temperature. In any case, I would expect a loaded-down truck/RV tire to warm up much more than 20 F above ambient.
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So far with my fun with TPMS project (see here:
http://www.thorforums.com/forums/f27...red-11423.html ) I've measured a PSI rise of about 10 on my first 90 minute drive in the RV while recording data (ambient temps at the time were around 60 degrees, my sensors are at the end of the valve stems so I wouldn't expect them to be able to measure the tire temp--seems more like they pick up the sun than tire temp).
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