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 - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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