I, too, was watching the pressure in my tires yesterday. I have a new enough truck now, that lets me see the tires' pressures in real time as I drive down the road. Last summer, the tires were at 78 PSI cold. Now that it is 10-30 degrees F everyday, the pressure had dropped to upper 50s-60 PSI!!! Wow, what a difference! So I filled the tires back up to 68 PSI, and figure that's a cold reading considering the gas station is only 2 blocks away. Then I started driving to the hardware store 20 miles away, and I watched the tires go up to 74 PSI. Now, the temp outside was not changing in that 20 miles, so what made the PSI shoot up, the friction heat from the wheels turning against the road surface? I don't care for all these gadgets put into new vehicles, but being able to watch the PSI go up and down is interesting. I had never kept an eye on it in summer, but if the tires were filled to nearly max cold PSI, I wonder how much above recommended cold PSI they went on those hot 90 degree days? Don't want a tire to explode!
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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