Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Farmall & IHC Tractors Discussion Forum
:

Recommended Rear Tire Pressure

Welcome Guest, Log in or Register
Author 
City-Boy McCoy

01-20-2007 16:45:49




Report to Moderator

Howdy, boys. As some of you may know, I have a couple of Super A's and a Super H. I have always put about 12-15 lbs of air in the rears. Now, somebody has recently told me I ought to have 35-40 lbs in the rears, unless I have fluid in the back tires, in which case, I should have 12-15. I do NOT have fluid in the rears. Fellows, what rear tire pressure do you recommend for the rears? (I would rather get my info from guys in whom I have confidence.) Thanks. mike

[Log in to Reply]   [No Email]
Roger Mills

01-21-2007 08:59:00




Report to Moderator
 Re: Recommended Rear Tire Pressure in reply to City-Boy McCoy, 01-20-2007 16:45:49  
Randy has the right approach for hard pavement. Here is what IH reccommended in the operators books: Front; 4ply 28, 6ply 36. Rear; Minimum for 4 and 6ply on 4, 5, 6, and 7" Duals 20 and all other sizes 12. Maximum for 4ply 4, 5, 6, and 7" Duals 24 and all other sizes 16. Maximum for all 6ply sizes 24. Also says to increase pressure on furrow side by 4 lbs. when plowing. By this-4ply single rears range from 12 to 16 lbs and 6ply single rears range from 12 to 24 depending on use. War tires were 28 front and 12 rear for all sizes except furrow side rear at 16 only when plowing.

[Log in to Reply]  [No Email]
City-Boy McCoy

01-20-2007 17:07:16




Report to Moderator
 Thanks, Boys in reply to City-Boy McCoy, 01-20-2007 16:45:49  
Thanks, boys. That's JUST what I thought my ownself. You are the best.... mike



[Log in to Reply]  [No Email]
Randy as in Randy-IA

01-20-2007 18:35:02




Report to Moderator
 Re: Thanks, Boys in reply to City-Boy McCoy, 01-20-2007 17:07:16  
Hi , I don't know if this will work on a tractor tire or not ( and it also depends on if you have any flat pavement ) . I used to drive four wheel drive trucks for river running with 39" tires on them ( half ton short box chevy with 39-15-15 Mickey T's baja's ) . In order to get a good road ride I got the tire wet ( Or rubbed chalk on the tread ) and drove it down the road , if the whole tread wasn't touching the pavement I let out air till it did then dropped it about 2-3 pounds more . That made sure that the tire wasn't rounded ( crowned ) but it wasn't underinflated either . The tires I used only got 18psi on the street and I aired down to 3-4 psi offroad . The sidewall called for 35-36psi max pressure . Like I said , it worked good for a pickup but I don't know if it'll work on a tire as big as a tractors tire . The truck tires weren't radials either but bias belted . For what it's worth ...Randy

[Log in to Reply]  [No Email]
NDS

01-20-2007 17:06:48




Report to Moderator
 Re: Recommended Rear Tire Pressure in reply to City-Boy McCoy, 01-20-2007 16:45:49  
Firestone recomends MAXIMUM pressures for thier 4 plys from 14psi to 20psi and 22psi to 30psi for 6 plys depending on tire size.



[Log in to Reply]  [No Email]
Charles McNelly III

01-20-2007 17:19:13




Report to Moderator
 Re: Recommended Rear Tire Pressure in reply to NDS, 01-20-2007 17:06:48  
Auto manufactures recommend changing the oil anywhere from 7,500 to 15,000 miles too. I don't think so. Use what your gut tells you, it's usually not far off. :)
Charles



[Log in to Reply]  [No Email]
Erik in WI

01-20-2007 16:57:38




Report to Moderator
 Re: Recommended Rear Tire Pressure in reply to City-Boy McCoy, 01-20-2007 16:45:49  
NEVER put 35-40 psi in a tractor tire! EVER! Even when trying to seat the bead! Who ever told you this is not right. The psi of the tire is the first numbers in the size. For example, 18.4 what evers get 18.4 psi, fluid or no fluid.



[Log in to Reply]  [No Email]
Brian J

01-20-2007 17:42:07




Report to Moderator
 Re: Recommended Rear Tire Pressure in reply to Erik in WI, 01-20-2007 16:57:38  
First time I've heard that one!!! If you can read the tire size, then I assume you can also read the recommended inflation pressure on each tire also.



[Log in to Reply]  [No Email]
Janicholson

01-20-2007 17:25:23




Report to Moderator
 Re: Recommended Rear Tire Pressure in reply to Erik in WI, 01-20-2007 16:57:38  
That would be ok for that one tire as a coincidence.
It is (no offense) bad policy. Big tires with less load need less pressure small section tires with proportionally greater load need higher pressures. The key id the tire footprint in dirt. and is very different between bias ply, and radials. Goodyear Ag website has quantities of data on contact pach, traction, and ballasting driven ag tires. Please do not put in pressure depending on the tires size, it can be dangerous/wrong. JimN

[Log in to Reply]  [No Email]
KRUSS

01-20-2007 17:08:32




Report to Moderator
 Re: Recommended Rear Tire Pressure in reply to Erik in WI, 01-20-2007 16:57:38  
So you're saying I should put 32 lbs in my combine tires? I don't think so.



[Log in to Reply]  [No Email]
Paul Shuler

01-20-2007 16:52:40




Report to Moderator
 Re: Recommended Rear Tire Pressure in reply to City-Boy McCoy, 01-20-2007 16:45:49  
I run about 10 psi in the rear and about 35 in the front tires.



[Log in to Reply]  [No Email]
old

01-20-2007 16:52:47




Report to Moderator
 Re: Recommended Rear Tire Pressure in reply to City-Boy McCoy, 01-20-2007 16:45:49  
10-15 PSI is for normal running and the 30 or so is to seat the tire beads. Never even try to run them with 30 plus in them or they will sort of sit like a rubber ball and you will bounch all over the place when your driveing it. Most tires will have a place on them telling you the PSI need but not all of them have that. Use more air to have a narrower foot print and less for more traction and wider foot print. Oh by the way it doesn't matter if you have air or fluid in your tires its still the same PSI at all times

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy