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 - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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1965 International Harvester McCormick Farmall cub tractor 2,500. Two owner tractor. My grandfather bought new in 1966, then we inherited it. Have all the paperwork original manual and all maintenance records. It starts and moves. Comes with underbelly mower, plough, and some other attachments.
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