ALL LOAD RANGES ARE PRINTED ON THE SIDEWALL OF YOUR TIRE; I THINK NEWELL WOULD SUGGEST YOU USE THE TOP RANGE FOR SUMMER USAGE. DIFFERENT TIRE MANUFACTURERS USE DIFFERENT PRESSURES BUT MOST WILL BE WITHIN 10 LBS OF ONEANOTHER. ONE THING TO ALWAYS REMEMBER IS THAT A TIRE RUNNING ON A SEMI WILL NORALLY BE READY FOR RETREADING WITHIN A YEAR AND A HALF AND THE RECAPPED TIRE CORE WILL BE OFF THE ROAD IN THREE YEARS MAX. I SAY THIS BECAUSE YOU MAY THINK YOUR TIRE LOOKS GOOD AT 4 YEARS SINCE YOU HAVE LOTS OF TREAD. DO NOT LET THIS FOOL YOU. I AM SURE YOU WILL NOT RUN THE MILES THAT A SEMI TRUCK DRIVER WILL, IE. 100,000 MILES ANUALLY. A TIRE CORE MUST BE REPLACED ON OR BEFORE IT'S FIFTH BIRTHDAY NO MATTER WHAT KIND OF TREAD IS LEFT. LOOK FOR DOT DATE ON SIDE OF TIRE. MANY TRUCKERS WILL TELL YOU FOUR YEARS MAX. I HAD TWO BLOW OUTS THIS SUMMER BECAUSE A TIRE DEALER TOLD ME THE TIRES LOOKED FINE. THE TIRES WERE ON THEIR 5TH YEAR AND BLEW LIKE A BOMB. CLOSER INSPECTION REVEALED TIRE CHECKING.
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