(800) 853-2651
SHOP NOW

Rear Tire Pressures

R

Randy Steep

New User
Hi, just put new rear bias tires on my 8n (11.2-28 4ply )and was wondering what pressure to run them at .The tire shop put them at 32 . I am getting a lot of tractor hop while trying to plow snow. I am running chains also .

Thanks
 
15 PSI, give or take a pound or two is more realistic.

From the Firestone site linked below:
Firetire_zps1fa96185.jpg

Ask Firestone
 
Well 32 is 2 pounds above what should be used to seat the bead on most. I would #1 look for another tire shop to do my tires and then lower the pressure to around 12PSI. Rule of thumb is PSI should equal how wide the tire is so if 12.4 wide 12PSI etc
 
I'm with Old and Royce. 12 pounds is what I run in my 8-n. With a loader and wheel wts, maybe a couple of pounds more.
 
(quoted from post at 21:34:22 12/02/13) Well 32 is 2 pounds above what should be used to seat the bead on most. I would #1 look for another tire shop to do my tires and then lower the pressure to around 12PSI. Rule of thumb is PSI should equal how wide the tire is so if 12.4 wide 12PSI etc
Click to expand...

I didn't see this post the first time around. I do have a small question. Does it cause a problem with running the rears at a higher pressure? I run mine about 12-15...seems to depend on which gauge I use that day...lol. Just wondering, thanks.
 
(quoted from post at 21:01:31 12/04/13)
(quoted from post at 21:34:22 12/02/13) Well 32 is 2 pounds above what should be used to seat the bead on most. I would #1 look for another tire shop to do my tires and then lower the pressure to around 12PSI. Rule of thumb is PSI should equal how wide the tire is so if 12.4 wide 12PSI etc
Click to expand...

I didn't see this post the first time around. I do have a small question. Does it cause a problem with running the rears at a higher pressure? I run mine about 12-15...seems to depend on which gauge I use that day...lol. Just wondering, thanks.
Click to expand...

A tractor is supposed to pull. Pulling requires traction. Tire manufacturers perform extensive testing in order to determine how to get their tires to pull better. Tire pressure is one of the biggest factors, with little or no load your 8N will do best around 8-10, and loaded it would do better with 10-15. 10-12 is a good medium, for both traction and comfort. generally you want to see just a little "squat" when it is carrying it's normal load.
 
A lot depends on what your doing. If you say using something heavy on the 3 point you may need more PSI but if your pulling something heavy at the draw bar maybe less PSI. If roading maybe a bit more
 
(quoted from post at 05:52:17 12/05/13)
(quoted from post at 21:01:31 12/04/13)
(quoted from post at 21:34:22 12/02/13) Well 32 is 2 pounds above what should be used to seat the bead on most. I would #1 look for another tire shop to do my tires and then lower the pressure to around 12PSI. Rule of thumb is PSI should equal how wide the tire is so if 12.4 wide 12PSI etc
Click to expand...

I didn't see this post the first time around. I do have a small question. Does it cause a problem with running the rears at a higher pressure? I run mine about 12-15...seems to depend on which gauge I use that day...lol. Just wondering, thanks.
Click to expand...

A tractor is supposed to pull. Pulling requires traction. Tire manufacturers perform extensive testing in order to determine how to get their tires to pull better. Tire pressure is one of the biggest factors, with little or no load your 8N will do best around 8-10, and loaded it would do better with 10-15. 10-12 is a good medium, for both traction and comfort. generally you want to see just a little "squat" when it is carrying it's normal load.
Click to expand...

That makes sense about the tire squatting. Thanks.
 

Rich, the post above yours sort of reminds me of the old days when we would put traction bars on the rear end of cars to make it squat more and put more traction to the ground. I have also seen cars at the 1/4 miles strip where they use those Hugh slicks and only run a little bit of rear tire pressure. I hadn't thought about tractor tires in that way though. Maybe we need to add some traction bars to the N tractors. :?
 
Those traction bars where installed to keep the rear ends from rolling as torque was put to them. Leif springs tend to roll some so the traction bars stopped that roll so as to not cause lost traction as the spring rolled. Yep BTDT and did my share of drag races on 2 and 4 wheels
 
You must log in or register to reply here.

Similar threads

H
rear tires
Replies
10
Views
617
Jim WI
J
O
real world tire pressure
Replies
0
Views
702
O~o\-HT
O
M
Counterweight for my 8N Dearborn
Replies
13
Views
757
Pete in Holland MI
P
M
1939 rear tires
Replies
5
Views
447
Kirk-NJ
K
3
Flat tire
Replies
16
Views
466
sotxbill
S
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.

Copyright © 1997-2024 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

Back
Top