Rubber tires allow for wheel slippage under load, and some wheel slippage is good for efficiency.
Wheel slippage can mean the difference between being stuck plowing in 2nd gear on steel, and plowing in 3rd gear on rubber. She just doesn't quite have enough power to pull in 3rd on steel, but the slippage of the rubber tires lets the tractor wind up and keep moving in 3rd.
Let's say 2nd gear is rated 2MPH, and 3rd is rated 3MPH. With steel you're doing 2MPH in 2nd gear, period. On rubber you might be doing 2.75MPH instead of 3MPH, but it's still .75MPH faster.
Even though the tractor is spinning a little bit on the rubber tires, it's still moving through the field faster and getting more work done.
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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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