Tire Plys
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=136997
Printed Date: 18 Jul 2025 at 7:20am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Tire Plys
Posted By: AJ
Subject: Tire Plys
Date Posted: 04 Apr 2017 at 8:25am
Is there a "rule of thumb" on going with ply ratings for rear tires on a tractors? There are 4, 6, 8, and 10s are the most common. Are the ply ratings better for specific applications? I know the higher numbers are better on industrial tractors/equipment. Also, does one ply dry rot faster than others or would they all be about the same?
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Can't fix stupid
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Replies:
Posted By: Richardmo
Date Posted: 04 Apr 2017 at 9:28am
6 Ply for rears would be the best.
Type of tire is going to determine on the cracking.
If the tire sets outside in the sunlight or sets in the dirt will not help.
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Posted By: Gerald J.
Date Posted: 04 Apr 2017 at 9:29am
The ply rating affects the flexibility and the load rating of the tire. More plies makes a stiffer tire and a tire capable of a greater load. You can find the details for tractor tires in a tire makers Ag Tire Handbook. Google can find it for you where you can download and study all you want. The easiest one to find is Titan/Goodyear. The load handling is also affected by the air pressure.
Gerald J.
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Posted By: HD6GTOM
Date Posted: 04 Apr 2017 at 7:55pm
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What size are you talking about? I spent 22 years selling and installing all sizes of them. My own observation--If you are hauling big bales or carrying heavy 3 point equipment 8 ply only. Less sidewall cracking and blowouts than 6 plys. As far as sunlight effecting them, the 8 plys seem to get harder the longer they are on the tractor. Most of the time up to about 80 HP 6 ply would usually be fine, anything over that 8 plys were recommended. Once you put them on they are yours for a long time. I put a lot of 12 ply on large hoes and construction equipment such as tiling machines. Never put a 6 ply tire on a combine that carry's more than a 4 row cornhead. If its got a 6 or 8 row corn head, 8 ply minimum. Anything bigger than that, 10 or 12 ply only. Been there seen the results.
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Posted By: Dakota Dave
Date Posted: 04 Apr 2017 at 8:16pm
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I have 10 plies on one of my WD45s. The original Goodyears were 6plies. The ten plié tires have no flex at all I run 8 psi and they are stiff. They doo look good though and it dosent really have a jod. Just sits in the shed till I need it to lift something.
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Posted By: AJ
Date Posted: 04 Apr 2017 at 8:35pm
I was mainly asking for an over view basicly to see what I could learn. Don't seem to be something I have seen on a subject on here anytime in the past so I thought I'd bring it up. I might be in the market for some new tires in my future.
Would there be much difference in ply recommendations for a B/C to a D14/D15?
Does I make a difference if you plan to plow or disc with that tractor as well?
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Can't fix stupid
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Posted By: LeonR2013
Date Posted: 04 Apr 2017 at 9:23pm
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If you'e going to carry big bales on the rear, 6 ply minimum say for a WD45, and if you are going to use a snap coupler disc 6 ply minimum with fluid. They can get real real touchy to handle if anything less. We found that front tires needed to be weighted also. Weight is weight generally no matter what size tire you're using. The guys above gave good advice.
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Posted By: Steve Zidlicky
Date Posted: 05 Apr 2017 at 8:42am
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cheap tires = 4 ply usually. right up your alley. good for swappin tractors not good for the long haul if you use it. someone will disagree though.
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Posted By: Gary Burnett
Date Posted: 05 Apr 2017 at 8:46am
With plies on rear or front tractor tires more is better,have 12 ply tires on the front of my Oliver 1365 loader tractor.
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Posted By: AJ
Date Posted: 05 Apr 2017 at 10:35am
So 6 ply or better would be the way to go.
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Can't fix stupid
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Posted By: LeonR2013
Date Posted: 06 Apr 2017 at 5:10am
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You know, you can get an idea of the stresses a tire goes through when looking at a pulling tractor tire when really getting into the grunt. Realistically none of us are going to pull the tractor like that, but if you're plowing, discing, etc. the tire will be stressed and I always tend to rely on the heavier tire.
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