Bigger tires on JD40?
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=159741
Printed Date: 30 Apr 2024 at 7:20pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Bigger tires on JD40?
Posted By: Strokendiesel002
Subject: Bigger tires on JD40?
Date Posted: 07 Apr 2019 at 9:39am
Hey guys!
As I'm new to the tractor scene, this is the only forum I'm in so I figured I'd ask.
My uncle's JD40 has 11.2x34 9bolts. Calcium Chloride ate away the area surrounding the valve stem and the bead ripped when the shop was trying to break it free.
We've been looking for viable options (read reasonably priced) for a same sized replacement for a couple weeks and are coming up short.
Today, I found a pair of 18.4x38s on 9bolts, labeled as duals.
2 questions - first, is there any reason a dual CAN'T be run as a single. Second, is that tire too large for a JD40?
Thanks!
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Replies:
Posted By: DMiller
Date Posted: 07 Apr 2019 at 11:59am
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Check the bolt pattern diameter, I am thinking the 38s will have a larger diameter, duals indication I am not certain but could be a heavier center to take the side loading. Then have to consider the HP to turn those 18.4s with ballast in them.
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Posted By: Tony.Or
Date Posted: 07 Apr 2019 at 5:01pm
WAy to much tire for a JD 40 .. Tony
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http://www.tonystractors.com" rel="nofollow - http://www.tonystractors.com
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Posted By: Strokendiesel002
Date Posted: 07 Apr 2019 at 7:18pm
Thanks guys! The fluid (ballast) would definitely be removed. I didn't think about the strong possibility of bolt spacing. I'll have to check that out.
Way too much tire - to talk or to wide or both?
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Posted By: HD6GTOM
Date Posted: 07 Apr 2019 at 10:53pm
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Way too wide and way too tall. I just checked with one of my old suppliers. 11.2x34 tires should cost you in the neighborhood of $250.00 each put on your little tractor. You will need tubes for those old rims. Have fun with it.
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