Hugh there is a lot more weight built into a 1066 just about a ton . Now with the 20.8 ya had on yours wright off the get go over a 18.4x38 there is a bunch of weight difference between the two . As to why your tire were gone in just one year here i can not say why could have been just a bad batch of rubber . As like i said my 806 has loaded 18.3x34 rubber on her and they are loaded along with 4 sets of donuts and the 806 gets a lot of road travel up to 15 miles on a signal round trip going over after round bales and i load 8 on the bale wagon and one on the spear on the fast hitch and have to drag that load up hills that put me down in high 2nd to pull up them i try maken three to four rounds a day hauling bales back to the farm . Now i have had that 806 for 9 years now and between all that road running and all the road running pulling silage wagons three miles round trip from the fields at a nother farm those tire are just now getting down to around 40 % tread . The 1066 does a tone of road miles and that tractor has Firestone 151 field and road on it loaded in a 18.4x38 and they have been on there now since 1999 when i sold Eugene that tractor and they are about 60% .and i can tell ya this that even with the direct axle mount 18.4 x38 duals that have 40% thread that if the inside or base tire were not loaded you would never pull the 470 18 foot disc in our ground and at times on the first pass you need a couple more thousand pounds added plus the ft rack full to keep in on the ground . Putting 20's on a 1066 will plum KILL the pony power of that tractor in my country BTDT you can just figure a whole gear loss just about the same on a 806 on up thru the 8 line up when ya go from 34's to 38 . The advantages of the 38 over the 34 is ya got a couple extra inches of ground clearance under the belly . Having the radials is nice to a point they will ride nice and do a good job pulling BUT around here a radial will not back up a load on a hill it will spin out every time don't care how much weight ya have on it and on the hill side they want to walk down hill on ya . Where i live i am only about 12-13 miles from the Firestone ag tire test center and have seen alot and use to be able to get some of the test tire years back talked to some of the guys that use to work there. Saw them test different tire behind the monster mobile dyno pulled by different tractors and believe me that thing can bring anything on wheels or track to her knees .
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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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