Posted by Hugh MacKay on September 02, 2007 at 04:15:03 from (216.208.58.114):
In Reply to: Re: Weight of an MD posted by Doug N on September 02, 2007 at 03:05:41:
Doug: 3" wider and probably close to 3" larger diameter, very likely puts close to twice the rubber surface on the ground. It will not make a whole lot of difference on roadways and other hard surfaces, however in the field situation it make a huge difference.
I learned this one many years ago, IH dealer delivered me a new 1066 with 20.8x38 single wheels and full of calcium chloride. After a season I drained the chloride and added duals. On the field, summer working conditions, it was far superior on drawbar pull in the field, to the singles with chloride. I will tell you this, I had one of the most merry rides of my life on hard frozen ground pulling a 12 tom manure spreader with those duals. Took the duals off, close to doubled the pounds per square inch, got along fine on hard frozen ground.
I had never been happy with my 560 or 656 with 15.5x38 with chloride, just never had the traction or flotation I figured they should have in the field. After the 1066 experience, I installed new 16.9x38 on 560 and 656 and didn't replace the chloride. It made field tractors of both in my opinion. I did keep the chloride and wheel weights on my Farmall 300 with 13.6x38 as it was mainly hauling wagons to barn on hard roads, and did need the weight. In fact as equiped I suspect my 300 was close in weight to 560 and 656. No question, match the tire equipment to the work being performed, it will surprise you how well any tractor performs.
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