Construction and other equipment - Model D grader tires

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Model D grader tires

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=98853
Printed Date: 28 Apr 2025 at 5:13pm
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Topic: Model D grader tires

Posted By: Nathan (SD)
Subject: Model D grader tires
Date Posted: 10 Dec 2014 at 2:06am

What size rear tires were most common on a Model D grader?

Replies:

Posted By: DiyDave
Date Posted: 10 Dec 2014 at 4:50am

8.50X 20, I think...

Posted By: DonBC
Date Posted: 10 Dec 2014 at 6:04pm

I would say that the most common are 8.25-20" but some early models and most basic models did use 6.50-16" on the front and 7.50-20" on the back. They also used drop centre rims for the 6.50-16" and the 7.50-20" and flat base rims for the 7.50-20" and 8.25-20"

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Jack of all trades, master of none

Posted By: Nathan (SD)
Date Posted: 10 Dec 2014 at 7:32pm

Thank You for the info.

Posted By: DiyDave
Date Posted: 11 Dec 2014 at 3:55am

9.5 X 20 military non directional tires will also work, if they are worn down about 2/3. I bought a set from genesco, and you could fit a nickel between the 2 rears...

Posted By: truckerfarmer
Date Posted: 11 Dec 2014 at 5:45am

Nathan, you might want to check with WW Tire in Watertown. Father-in-law bought 8 of those non-directional tires for his dump truck from them this fall. I think he said he gave $125 each unmounted. They are 8.50 x 20. They are new take offs.

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Looking at the past to see the future.
'53 WD, '53 WD45, WD snap coupler field cultivator, #53 plow,'53 HD5B dozer

Duct tape.... Can't fix stupidity. But will muffle the sound of it!

Posted By: DonBC
Date Posted: 11 Dec 2014 at 12:01pm

I bought new "off shore" made cheap truck tires for my grader. Quality was not important as they would not be carrying any heavy loads at speed. They had three tread designs to choose from and being a little smaller in outside diameter than true grader tires or old military tires it left more room between the tandems for at least one set of chains. The military tread is almost useless in snow.

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Jack of all trades, master of none

Posted By: Ages Cat
Date Posted: 15 Dec 2014 at 6:09pm

I called WW Tire today and no luck with the tires.

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Curt Anderson
HD3, HD5B, HD6AG,HD6B dozer, I-400,615, 616,620,720,ACP25 lift truck, 1956 D Grader, AC 540 loader, AC #84 plow, Simplicity tractors, Agco MT225, Agco 2025,