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Should I Fill My Trailer Tires To Max PSI Even In Hot Climates

Question:

2012 Open Range Roamer,5th wheel. 31ft. I set my trailer tire pressures at the manufactures Cold PSI marked on the side wall. I have Carlisle Trail HD Radials 235/80R16. 80PSI, Should I adjust for HOT climates. Florida. I aired the tires up early morning before the sun hit them and @ 78 F. Temps go up to 90F + and, road surfaces are much hotter. Do I still use 80 PSI? Thank you

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Expert Reply:

In regards to trailer tire inflation, you'll want to as you mentioned fill the tires to max psi listed on the side wall of the tire regardless of ambient temperature. This rating already takes into consideration most of these environmental factors. That said, if you find yourself towing long distances is hot climate then you are really going to want a way to closely monitor both pressure and temperature as this way you can better work to prevent blowouts. The TST TPMS for RVs part # TST-507-RV-4-C is what I recommend as it will send alerts when conditions are favorable. In which case you'd simply need to pull over and let the tires cool, no preemptive change in tire pressure is going to fix this.

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Conner L

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