Tire pressures during temperature swings
I see a 3-4 PSI rise in my Ram 2500 tires from a cold start to highway driving after 30 minutes. During the day, if starting off from a cold location, to the hottest destination, do you account for...
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A friend who owns a tire store says a tire that is under-inflated runs hotter due to increased sidewall flex. This heat is what causes blow outs on tires that are within their normal life span. Old tires may blow out due to cord failure no matter what the pressure or heat. Newer tires may blow out due to previous cord damage from a big pot hole or running over a curb. Unless a viable tire is way over-inflated when cold it won't blow out when on the road because it runs cooler at higher pressure. The small increase in pressure due to higher ambient temperature are not enough to cause failure.
