Posted by mkirsch on January 17, 2012 at 13:54:14 from (64.80.110.74):
In Reply to: 18.4 - 34 vs 18.4 -38 posted by scotty-mn on January 17, 2012 at 12:25:04:
18.4x34 is the modern size equivalent of the old 15-34 tire that was used on the large Wheatland tractor models like the Mccormick WD-9.
For a time, they were the biggest tractor tires available, and were used on many 70-90HP tractors in the early 1960's.
The 18.4x38 tires were invented for the modern 100+HP row crop tractors that came out in the 1960's. Legend has it they were specifically invented for the IH 1206.
38" rubber gives you a few more inches of ground clearance over 34's, and extra square inches of contact area with the ground, but they are more expensive.
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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
... [Read Article]
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