Tire pressure can be affected not just by air temperature but by the temperature of the road surface as well. We’ve all felt that hot asphalt in the summertime. Now imagine your wheels pressing up against that surface for hours on end.
Many tire manufacturers make their tires to withstand temperatures up to 250 degrees Fahrenheit. At this point, the rubber starts to degrade and lose its structural integrity, which can lead to severe problems such as a blowout.
Even on an extremely hot and sunny day, asphalt is unlikely to get this hot, but it’s worth keeping in mind if you live in a hot climate.