Popup tires in Texas Heat (90+)
Ihave always filled my popup tires to max pressure (65psi) 13 inch “ D” rated tires. A week ago we had another blowout, door side of camper, 95+ ambient temp, 65 mph, about 30 miles east of Junction T...
Forum Discussion
The issue is sidewall flexing. When the tires are not at full pressure and you are driving highway speeds, the sidewalls are flexing more than they should. The flexing causes heat and builds up, eventually leading to a higher likelihood of a blow out. While there is more than enough opinions on the matter, you'll have to decide what works for you. Two tire blow outs at lower pressure was enough to convince me to stay at max pressure. No problems after that when driving 65mph and under. That included a stint across the Texas panhandle in summer.
