Tire Pressure Monitoring
are these gadgets worth the money? in 10 years on the road we've lost 4 tires, they went flat and we didn't know it until it was too late would a tpms warn us of a flat before the tire disintegr...
Forum Discussion
agesilaus wrote:
Yeah well the physics are:
P1V1/T1 = P2V2/T2 where P=pressure, V=Volume and T-Temp in degrees Kelvin
Since V1=V2 you can drop that from the equation (yes volume may change slightly but we can ignore that)
and P2 is twice P1 then the temp in degrees K would have to double. Like from 270 deg K to 540 deg K and that obviously is not happening. That would be a 270 deg Celsius temp jump since our tires are not running at over 500 deg F. That's what physics says.
Good info. I once pulled into a rest stop and saw smoke rolling out of the left front tire. Turns out I had a caliper that was dragging for some longer period of time - and things were pretty toasty. My laser temp gun would not measure that caliper because it's limit was 1,000 degrees. I didn't think this scenario was even possible so I checked and double checked, but I can say it was still smoking when we finished our business at the rest stop. So we had lunch. My point is that I could believe that in rare circumstances temps can easily go over 500 degrees. But if that can happen then I wonder why my tire didn't blow. And no, I did not try measuring the tire temp ... Just saying ...
