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DSeries4 
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7574
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 Topic: Dual tire pressures
Posted: 28 May 2017 at 8:13pm |
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Just wondering what pressure I should be running on the duals of my WD45. The main tires are 13.6 x 28 but the duals are 14.9 x 28. Since the duals are larger, I think they should be run at a lower pressure. Am I right?
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Calvin Schmidt
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Joined: 11 Sep 2009
Location: Ontario Can.
Points: 4574
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Posted: 28 May 2017 at 9:04pm |
I would run lower pressure in the duals because of the size difference. I run 15 lbs + in radials on a big tractor. Your tractor is light but bias tires so maybe 15 lbs in the duals and 20 lbs in the mains.
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HD6GTOM
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Joined: 30 Nov 2009
Location: MADISON CO IA
Points: 6627
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Posted: 28 May 2017 at 10:56pm |
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15 lb inside and no more that 10 in the duals.
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Michael V (NM)
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Joined: 12 Sep 2009
Location: NM
Points: 2524
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Posted: 29 May 2017 at 12:24pm |
I'd prefer that the larger tires were on the inside...but yes, lower pressure on the outside, especially with the big tires on the outside
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bobkyllo
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Joined: 14 Sep 2009
Location: minnesota
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Posted: 29 May 2017 at 4:01pm |
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Why do you have larger tires on the out side? That's hard on the axle. I've always set up the tractor to have 20 pounds inside and 14 on the out side
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Brian Jasper co. Ia
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Joined: 11 Sep 2009
Location: Prairie City Ia
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Posted: 30 May 2017 at 2:14pm |
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Running 2 different size tires on the same axle makes the tractor harder to move. The larger tire will drag the smaller tire.
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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DSeries4
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7574
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Posted: 30 May 2017 at 9:00pm |
 bobkyllo wrote:
Why do you have larger tires on the out side? That's hard on the axle. I've always set up the tractor to have 20 pounds inside and 14 on the out side |
I bought the tractor that way. It will probably stay that way until I win the lottery, then I could buy 4 new matching tires! None match now and some do look iffy...
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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