28 inch rear wheels
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=125891
Printed Date: 03 Oct 2025 at 3:53pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 28 inch rear wheels
Posted By: playsindirt
Subject: 28 inch rear wheels
Date Posted: 14 Jul 2016 at 7:47am
can I put wd rear wheels on my D-15. I can find used 28 inch rims and tires all day. seems 26 inch are not as common. Thanks.
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48G 49B 67D15 35picker allcrop60 1973 rotobaler 49C
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Replies:
Posted By: DrAllis
Date Posted: 14 Jul 2016 at 7:52am
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The complete rim and spin-out center will fit a D-15, yes.
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Posted By: DougS
Date Posted: 14 Jul 2016 at 8:16am
D-15 should have had 28 inch tires in the first place. What were they thinking?
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Posted By: SteveM C/IL
Date Posted: 14 Jul 2016 at 8:20am
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If there isn't any fender issues that's what I'd do.Have 14.9's on the WD and you can't set wheels in the last notch but don't need that setting anyway.
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Posted By: DrAllis
Date Posted: 14 Jul 2016 at 8:22am
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That's one of my arguments why a even a D-15 II never really replaced a WD-45 on a 3-16's mounted plow in tough going....less rubber and less engine torque.
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Posted By: Gerald J.
Date Posted: 14 Jul 2016 at 8:27am
If the tire has traction the slightly small diameter gives more pull for a given ground speed and engine power. The trade off is the bigger tire often has more area on the ground and so is a bit better at converting torque to pull. Its also affected by weight on the tires, type of tire (bias vs radial, radial always pulls better), engine torque and gear ratios.
A two inch larger rim with the same cross section tire also means the axle housing clears the ground by another inch, handy when cultivating or spraying row crops.
Gerald J.
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Posted By: Allis dave
Date Posted: 14 Jul 2016 at 9:03am
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The taller rear tires could make it tough to hookup snap coupler equipment. I have 16.9-28's on my WD45, and unless everything's perfect I usually have to jack up the snap coupler hitch 1-2 inch to get inside the bell.
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Posted By: Adam Stratton
Date Posted: 14 Jul 2016 at 11:48am
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I have 14.9 x 28s on a d15ii and it works just fine for me
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Posted By: Eldon (WA)
Date Posted: 14 Jul 2016 at 3:47pm
Make sure you use the rail stops, if the eccentrics don't hold the tires will hit the fenders.
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