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2 different rear tires

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Mark-NH

01-22-2002 11:28:56




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Just bought a 1987 ford 1910 and discovered it as one Good Year and one Firestone rear tire. They are both 13.6-24. The Firestone (not loaded) is new The Good Year (loaded) is 60%. Before I spend $120.00 on loading the Firestone I would like to know that I can run these together. Any tire experts out there?

Thanks




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CJ

01-23-2002 08:29:32




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 Re: 2 different rear tires in reply to Mark-NH, 01-22-2002 11:28:56  
For plowing some people would load the furrow wheel for improved traction while the sod wheel is not loaded. The minor difference in tire diameter will not harm a tractor differential. In a road vechicle it is an important concideration but in a tractor with single rear wheels its not a big deal.



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paul

01-24-2002 09:06:49




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 Re: Re: 2 different rear tires in reply to CJ, 01-23-2002 08:29:32  
Not such a big deal on a smaller tractor. He didn't mention if he had 4 wheel drive tho. On the big (200hp+) tractors with front wheel assist, they need matched tires on all 4 corners. If the fronts are off by just a bit and the rear end pushes the front end, it's about a $10,000 bill to rebuild the front axle I'm told.

But on a small tractor it shouldn't be much of an issue. Right now the bigger problem is one side loaded, the other not. Dad ran a tractor that way for a decade, I hated driving it - hard to turn, & I felt very bad for the rear end.

--->Paul

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TomG

01-23-2002 03:55:15




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 Re: 2 different rear tires in reply to Mark-NH, 01-22-2002 11:28:56  
A fine point to other comments is that it's rolling circumference, not simply diameter that matches tires. Tires of the same diameter that have different loaded profiles will have different rolling circumferences.

Tire pressure does affect rolling circumference, and fiddling with pressures could match minor tire differences, but then the tractions might be different. Don't know; the idea probably works but might cause some diff wear.

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Walt

01-23-2002 03:30:43




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 Re: 2 different rear tires in reply to Mark-NH, 01-22-2002 11:28:56  
I would be concerned with having one tire loaded and the other not. You will have more traction/weight on the loaded one casuing the unloaded one to spin more frequently, causing the rear differential to work more often



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Mike

01-22-2002 12:10:19




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 Re: 2 different rear tires in reply to Mark-NH, 01-22-2002 11:28:56  
Hey Mark,
You'll want to check and make sure the tires are the same diameter, measure across the tire at the hub, out side tread to outside tread. If they aren't the same it will run your differential spyder gears all the time, like going around a corner all the time, over time it'll wear your rear end out. It shouldn't be too hard to match one or the other if they're different, if they're the same, happy motoring.
Mike

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Joe MI

01-22-2002 12:03:14




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 Re: 2 different rear tires in reply to Mark-NH, 01-22-2002 11:28:56  
Up until last year when I matched the tires on my fergy all three of my tractors had different brands on the two back tires. You should be all right as long as they are the same size.



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