I dont use the temp reading on my TPMS, it was a byproduct of the model I bought and seems to be common in all aftermarket wireless TPMS systems. I do use the pressure reading and if that pressure reading is going up, so is the internal temp.
As I stated twice before, I bought the TPMS to alert me of a tire failure - period. I wanted to know as quickly as possible if a tire was losing pressure. What I was surprised about was the relatively small change in pressure increasing (due to heat) when driving from 60mph up to 70mph. That is why I started this thread. I never thought about it the other way around, if one tire is going up much higher than the others there could be a tire, brake or wheel bearing problem so I appreciate that tip.
myredracer - you and that article linked want to claim that the tire speed rating should be considered the redline of a vehicle. What engineer in their right mind would design or sign off on something that would be run at 100% of its capability for the majority of its life?! That would be like Ford setting the redline for your V10 engine to wherever it sits when driving 65mph down the road. That is a safe and reasonable speed and sure you can exceed it slightly if you wanted to pass somebody but the entire time you are driving down the highway just go ahead and run it at redline...
