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

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads
Tractor Parts
Salvage

Community
Discussion Forums
Project Journals
Your Stories
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

  
Tractor Talk Discussion Board

OT - Slightly Mismatched Tires on AWD Car - Showstopper?


[ Expand ] [ View Replies ] [ Add a Reply ] [ Return to Forum ]

Posted by npowell on January 23, 2019 at 10:22:31 from (151.207.250.51):

Gentlemen,

I have a 2013 Subaru Forester. Three months ago, I gashed one tire on a curb (at speed) and replaced just that tire with the same size, but different brand of tire. The other three tires are original and have about ¼ of their useful life left.

It just came to my attention that the Owner’s Manual specifies all four tires should always be replaced simultaneously to avoid mismatched rotation speeds, which could damage the center differential (the one in the transmission/transfer case that accommodates speed differences between the front and the rear). Conceptually, I knew it could be an issue, but I really didn’t think that tread wear difference on the same size tires would be enough to cause a problem. Now, I am seeing things online that suggest otherwise.

Per the link at the bottom, Tire Rack indicates Subaru’s spec is within ¼ inch of tire circumference or 2/32 tread wear. On my car, as far as I can tell, the difference between the new tire and the originals is probably about twice that. The attached driver’s side pic shows the difference in rotation that accrued over approximately 150 feet of straight driving. By my math, it seems the rear probably does about 5 more rotations per mile than the front (which is around 1%). For reference, I’ve also attached a pic of the passenger side after the same 150 feet of driving; surprisingly well-matched.

I suppose I ought to suck it up and do something about it (either have the new one shaved or get four new tires on the car). Before I leap, I figured I might check around to see if anyone knows if the Spec/Owner’s Manual is a spook story to sell tires, or if that much mismatch really can damage the car.

Thanks,

Neil




Replies:




Add a Reply!
You must be Logged In to Post


:
:
:

:

:

:

:

:

:

Advanced Posting Options

: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

No political comments, hate speech or bigotry of any kind will be tolerated. Violations will be removed and posting privileges may be permanently revoked without notice.



 
Advanced Posting Tools
  Select Gallery Photo  Attach Serial No List 
Return to Post 
Upload Photos/Videos
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.

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


Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o ... [Read Article]

Latest Ad: Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor [More Ads]

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