Re: SMTA tire size

Posted by Hugh MacKay on March 28, 2003 at 07:47:46 from (209.226.106.103):

In Reply to: SMTA tire size posted by 57ringo on March 27, 2003 at 20:20:46:

Tim and rusty farmall have both made good points on this matter. A lot has changed in 50 years. Soil compaction has become a concern. Less and less tractors are pulling heavy loads on hard roads. One item we have learned is more rubber on the ground and less weight will pull the same load in the field.

I was at farm just recently, while there one of those 350 hp 8 wheel drive tractors rolled into shop. When he crossed the 3" high threshold that big tractor bounced just like a baloon would. No chloride in that one. There were wheel weights on rear, purely to give same pounds per square inch on ground on both front and rear tires. If those big articulated tractors were not balanced it would create excessive wear on one gear box.

If your goals are to pull heavy loads on hard ground as in tractor pulls keep the tire size down, now there is a limit. I farmed and in the 70s bought a 1066 with duals, no added weight of any kind. My heavy loads were pto. I was working a soil type very vulnerable to soil compaction. I almost never took those duals off. The one exception was hard frozen ground in winter. Those extra pounds per square inch on ground sure count when ground is hard and some frost, snow and ice to boot.

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