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Buying tires for my 38" hi-crop 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=49314
Printed Date: 26 Jun 2025 at 2:13pm
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Topic: Buying tires for my 38" hi-crop wheels
Posted By: Gunn
Subject: Buying tires for my 38" hi-crop wheels
Date Posted: 20 Apr 2012 at 8:29pm
I purchased my 1961 D-15 hi-crop tractor a long time ago, with 26" wheels and tires on it. Sits very low in rear. A few years ago, i found original adjustable 38" wheels for it. Fast forward to now and I am finally ready to purchase tires. I want to make sure I get the right tires. Measured my wheels tonight and they measure 11.2 across the rim width, measuring from inside the rim "lip". So does this mean I need to get the 11.2-38 tires?

Reason I ask is when I enter this tire on the Firestone Ag website, it lists the rim width as 10". Just trying to make sure I'm looking for and ordering the right tires for the wheels I have!

Thanks,

Tom

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1961 D-15 Hi-Clearance



Replies:
Posted By: Matt MN
Date Posted: 20 Apr 2012 at 8:34pm
I believe a D15 should either have 11.2-38 or 12.4-38 tires on it.

I have 13.6-38 on my D15 high crop.

Can you post any pictures of your high crop?



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Unless your are the lead horse the scenery never changes!!


Posted By: Gunn
Date Posted: 20 Apr 2012 at 8:42pm
The 13.6-38 tires that were also an option on this tractor, when entered in the http://www.firestoneag.com/en/tire-finder/search-Ag-Flotation.aspx" rel="nofollow - Firestone Ag website, lists a rim width of 12". I need to get back out and check, but that may be my rim outer width from outer edge to outer edge. So...maybe those are the tires I really need?! 

Tom



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1961 D-15 Hi-Clearance


Posted By: CTuckerNWIL
Date Posted: 20 Apr 2012 at 8:57pm
12.4's on 11 inch rim by this chart.
http://www.millertire.com/product_images/uploaded_images/tire-conversion-chart.jpg" rel="nofollow - http://www.millertire.com/product_images/uploaded_images/tire-conversion-chart.jpg


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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF


Posted By: Gunn
Date Posted: 22 Apr 2012 at 9:05pm
Thanks for the info. That chart is interesting. I guess my main trouble is understanding how to measure rim width in relation to how those charts denote rim width. Want to make sure I get it right. So here's a picture I took of the wheel. 

Is this the way to measure it?! Outside to outside. This results in about a 12-1/4" measurement. Is this it?



Thanks,

Tom



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1961 D-15 Hi-Clearance


Posted By: Tony.Or
Date Posted: 22 Apr 2012 at 9:16pm
Always  measure  inside  the  bead,        Not  out side. Tony

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http://www.tonystractors.com" rel="nofollow - http://www.tonystractors.com


Posted By: CTuckerNWIL
Date Posted: 23 Apr 2012 at 7:52am
That looks like it would be an 11 inch rim.

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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF


Posted By: Gunn
Date Posted: 23 Apr 2012 at 6:45pm
Originally posted by Tony.Or Tony.Or wrote:

Always  measure  inside  the  bead,        Not  out side. Tony

Great, thanks for the info guys! So, *this* would be the right measurement then?!! Glad I asked! Does indeed look to be 11"... 



Thanks again,

Tom




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1961 D-15 Hi-Clearance


Posted By: Dave (Mid-MI)
Date Posted: 23 Apr 2012 at 6:57pm
Yes, you have an 11" width rim, so 12.4-38 is the proper size tire for that rim.


Posted By: Eric NY
Date Posted: 23 Apr 2012 at 7:15pm
My D15 II High Clearence with 13.6-38 rears and 6.50-16 fronts. Eric NY


Posted By: Gunn
Date Posted: 23 Apr 2012 at 7:23pm
Thanks, yes 12.4-38" it is. In looking at these tires, I've found some saying "tubeless". I figured there was a tube. I'm guessing that depends on the rim. I assume I'd need a tube?

Eric,

Nice to see that photo again! I actually have that photo saved on my computer from years and years ago from the previous AC forum at this site. My tractor is absolutely no match for yours and looks quite beat up and silly with the 26" wheels on her now. But I often check out that photo and dream about what mine can look like some day! Beautiful!

Tom




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1961 D-15 Hi-Clearance


Posted By: CTuckerNWIL
Date Posted: 23 Apr 2012 at 8:19pm
Shouldn't need a tube with tubeless tires. Just have to have the right valve stem.

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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF


Posted By: Gunn
Date Posted: 24 Apr 2012 at 1:41pm
So I can go either way then: tubeless tire, or tire with tube?

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1961 D-15 Hi-Clearance


Posted By: CTuckerNWIL
Date Posted: 24 Apr 2012 at 3:12pm
If you buy the right tire. Tubeless tires usually say not to use a tube.

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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF



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