Hot ground is its own operating condition
A machine working a site in summer here is running tires on a surface considerably hotter than the air, and heat is what ends OTR tires.
The tire generates heat internally through flexing, and it sheds that heat into the air and the ground. When the ground is hotter than the tire wants to give heat to, the shedding slows down while the generating continues at the same rate.
Which means the same machine, on the same cycle, at the same pressures, is running hotter in July than in March. Not because anything is wrong, but because the conditions changed.
Two practical responses.
Reduce what you can control. Pressures set correctly, cycle speeds not creeping up, loads within spec. Each of those reduces heat generation, and in summer that margin matters more.
Check more often in the hot months. A tire degrading internally from heat gives no external sign until it is terminal, and the window for catching it is shorter when the conditions are harder.
The cool-down argument
Where the work allows it, giving a machine any break in its cycle lets the tires lose some of what they have built up. On a tight cycle that is not available, which is itself worth knowing: a site that has shortened its cycle times has raised its tire temperatures whether or not anybody intended it.
Repair before replacement
The national OTR services page sets out when an injury is repairable and why, on a tire of this value, repair is frequently the right answer.
About this store
The North Las Vegas store carries OTR tires and every other Purcell category, offers wheel refurbishing and mobile service, and is managed by Brandon MacIntyre.
No managed mining program is run from here. Reno and Elko are the Nevada locations for that.
See the national OTR services page for all 41 locations.