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Case Tractors Discussion Forum

Tire/rim difference

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09-10-2020 15:08:30

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If I put the same tire (size and brand) on a 10" rim and 11" rim, then had them side by side on a tractor (thinking dual wheels on each side), how much difference would there be? Could I slightly over inflate one and slightly under inflate the other? Is a 38" rim.

I found a second set of rims, but after getting them I think they are slightly wider. Didn't think about that when I bought them. This the question.


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Case Nutty 1660

09-11-2020 07:37:33

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 Re: Tire/rim difference in reply to Patsdeere, 09-10-2020 15:08:30  
Like said no problem at all with what you are describing, I have ran 18.4 x 34's duals with 16.9 x 34 inside tires,, I run 20 psi on the inside and 10 psi on the outer duals,, same basic thing as Steve does, I used to run 18 psi but it seems tires last better with a couple more pounds where i use a lot of 3pt equipment so i just go with that now days
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09-10-2020 18:36:28

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 Re: Tire/rim difference in reply to Patsdeere, 09-10-2020 15:08:30  
10 inch wide vs 11 inch wide. But the same size tire

You would never notice a difference. I shouldn't say never but after a couple thousand miles for a parade tractor the 10 inch tire might have a slight more wear in the middle than the 11 inch.

The rubber tires have threading inside that does not expand with different rim widths. So you just have a tire that has the sidewalls pinched in a little more than the other. This will cause the center to wear ever so slightly more.

I would run it until you find a matching rim in the future. My thoughts...

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09-10-2020 17:00:28

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 Re: Tire/rim difference in reply to Patsdeere, 09-10-2020 15:08:30  
I don't think you will notice much size difference on the tire. Outside duals run a lower pressure than inside tires. 18.4 x 34 tires need 18 psi and the outside dual would only be 10-12 psi. My opinion only.....

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09-10-2020 17:20:00

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 Re: Tire/rim difference in reply to casecollectorsc, 09-10-2020 17:00:28  
Forgot to mention, this is for chits and giggles, it's only a parade tractor.

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