HightyHo

You know a lot about the part but never answered my question. How hot is too hot and what PSI is too much?

Update - Driving across Kansas and Colorado with temperatures near 105 F the tires and sensors did great. When I started the day the Cold Tire Pressure was 75 on all tires and after 8 hours of driving the maximum pressure seen was 88PSI. The tire temperatures reached 148 F at the maximum and both temp and pressure were pretty stable right at the 104F outside temperature. I was pulling between 64-72 MPH depending on how the road conditions were (and wind). Just trying to update since it appears nobody else has had this question before.

Hello folks, I just installed the GM Tire Pressure Monitors (GM P/N 84152501) in my Goodyear Endurance RV Tires (225/75R15). Does anyone know the safe operating temperature range for these sensors? When coming home from camping the other day I was running 70 mph (90 F outside temp) and the tire temperature was at 138 F. All 4 tires were the same temp and pressure, just curious as to what is the temperature I should start getting worried when driving? On my screen the temp was still showing green but had me a little alarmed and thought I would ask. We have a trip out west in the coming weeks and temps will be in the 105 F range so I am sure the tire temps will go up since the asphalt itself will be around 140 F in the sun. Tires Goodyear Endurance (80PSI Cold) with a speed rating of 87 mph. The tire pressure also raises to 85PSI when running at temperature, which I understand is normal. The real question is about the temperature and where should I start to get concerned and backing down my speed or taking more breaks? 2019 GMC Sierra SLT 5.3L with Max Tow Package