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Reload this Page 8.50 Tires on 8.50 Rims??
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Old 04-05-2014, 12:36 PM
J-Mech J-Mech is offline
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Question 8.50 Tires on 8.50 Rims??
Anyone ever put 8.50 tires on the 8.5" rims? If you did, post some pics. I want to see what they look like. Considering putting a narrower tire on a wider rim so it is a little shorter and flatter for plowing. It will drop my ration a little, and that's what I'm looking for.
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Old 04-06-2014, 10:26 PM
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sawdustdad sawdustdad is offline
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Jonathan, do you think it would make a noticeable difference in tire diameter? It might actually reduce the contact area of the tread by distorting the tread surface. I'd be interested as well in what others have found doing this.
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Old 04-07-2014, 01:04 AM
J-Mech J-Mech is offline
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Yes, I actually know the answer. (Not how much it will affect diameter though.) Don't mean to sound snide, but i really just was hoping that someone had done it and would have a pic. Also to save me any time messing around. It may not make enough difference to matter. Tractor pullers use this trick all the time. I've done it on trucks and tractors. A tire is made for a rim that is narrower than the tread width. Putting a 8.50 tire on a 8.50 rim will flatten out the tread and give more ground contact, thus also decreasing diameter. No, I really don't think that it will distort the tire, it just won't look as "round". Look at Sam's supers. He uses a wider rim than stock to flatten out his tread. I want to reduce diameter just a little, to slow the tractor but it may not do much. I may just have to mount one tire on a 6.50 rim, and one on a 8.50 rim and compare.

I don't even have a set of tires to play with yet....... just thinking ahead.
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Old 04-07-2014, 07:51 AM
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I doubt that you'll notice a speed change.
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Old 04-07-2014, 09:34 AM
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I doubt that you'll notice a speed change.
Yeah, I have a feeling your right. I think the tires may be too small to notice any real difference. On rear tractor tires (18.4-38's) we see a big difference when we went 3" or even 4" on the rim...... but as small as these are...
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Old 04-07-2014, 09:37 AM
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Let some air out.
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Old 04-07-2014, 09:42 AM
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Let some air out.
I did that on a set of tires on my 1811..... didn't like the results. Wore out the outside of the tread, and the bias ply tires didn't like low air pressure. Hard to flex the sidewall of a bias tire. I don't want any less than 10 PSI. (I think that's what I found was the lowest I could run... )
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