Pappy, your new tires have a higher load index (though not necessarily ply rating) and are capable of holding more air pressure and this more weight. Load index is the 2 digit number next to the speed rating ( ex: 94H). The correct way to determine inflation for these new tires would be to go to the load index chart in the "Tire Guide" (every tire store will have one), look up the old load index (ex 92) and cross reference the car maker's suggested inflation with the weight in the book- then cross reference this weight with the proper inflation for the new load index (should be higher). Simpler, just add 9 lbs- it will probably put you in the ball park. That being said- on modern radials, you will almost NEVER see one fail due to OVER inflation- infact, you will be hard pressed to find one in a million scrap tires that even exhibit signs of over inflation. Modern tires fail or wear prematurely for these reasons- road hazards/ impacts (made more susceptable by low inflation), alignment wear (also exagerated by low inflation), and low inflation. AIR 'EM UP!
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Today's Featured Article - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
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