Replacing two tires - Page 2 - Subaru Outback - Subaru Outback Forums

SubaruOutback.org is the premier Subaru Outback Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Rate Thread
Old 11-06-2012, 12:38 PM   #11 (permalink)
Registered User
 
Join Date: Mar 2010
Car: 2010 Outback 3.6R
Posts: 133
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by crabjoe View Post
When they did the RF balance, did the just stick it on the balancer then come back and say they couldn't be balanced? If so, they need to try again because it still might be able to be balanced.

They should dismount the tire and check the balance on the rim, by itself, because the problem might be the rim itself. Also, some rim/tire combos just need to be remounted in a different position to balance out.
All very true. I'm not in love with the dealer but since I expected them just to tell me they couldn't duplicate I'm happy they're doing anything.
arizonaadam is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-06-2012, 12:38 PM   #12 (permalink)
Registered User
 
Join Date: Mar 2010
Car: 2010 Outback 3.6R
Posts: 133
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by Nickshu View Post
It's in the owners manual. It's also in the factory service manual, which I can check when I get home and post a screenshot. Your dealer should know better.
This would absolutely rock, please consider it if it's not too much trouble!
arizonaadam is offline   Reply With Quote Quick reply to this message
Old 11-06-2012, 12:43 PM   #13 (permalink)
Registered User
 
Join Date: Jun 2012
Car: 2012 Outback 3.6R
Posts: 176
Feedback Score: 0 reviews
Default

I would go with 4 new tires. You have two bad tires. I suspect you will find all four are from the same batch. Check the date codes. If they are from the same batch you have two more that will most likely go bad then you will have two new shaved tires and will have to shave two more when you replace the ones that were on the car from the start.
lavarock is online now   Reply With Quote Quick reply to this message
Old 11-06-2012, 12:53 PM   #14 (permalink)
Registered User
 
Join Date: May 2009
Location: WV
Car: OBW H6 VDC, H6 OB Sed, XT6's
Posts: 3,922
Feedback Score: 0 reviews
Default

do whatever you want. replace all 4 tires and be done with it, you've already decided.

there are options if you want or replace just two but you've decided and moved on, just get on with it you're good to go!

new car owners tend to be far pickier than what actual, practical experience may dictate, what can and can't be done by experience, what failure modes are out there, causes, folks actually tearing apart transmissions, etc. most folks aren't going to trade in new ownership anecdotes and philosophies and adopt practical, older vehicle ownership routines.

there is truth in both realms but best to stick with yours, which you've already seemingly decided on.
__________________
H6 VDC OBW, H6 OB Sedan, XT6's, castrated LSi - FWD EJ18
grossgary is offline   Reply With Quote Quick reply to this message
Old 11-06-2012, 01:25 PM   #15 (permalink)
Registered User
 
Join Date: Jul 2011
Location: Pittsboro, NC
Car: 2011 Outback Premium 6MT
Posts: 546
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by lavarock View Post
I would go with 4 new tires. You have two bad tires. I suspect you will find all four are from the same batch. Check the date codes. If they are from the same batch you have two more that will most likely go bad then you will have two new shaved tires and will have to shave two more when you replace the ones that were on the car from the start.
Just trashed one of my OEM tires at 22k with an un-repairable puncture. Since they were over half done, I decided to bite the bullet and buy four new Michelin Defenders for $620 OTD (after rebate) instead of trying to find a half worn used tire or getting one shaved. Now I have three extra tires in case I wear out some of the Defenders early or trash one of them.
It is amazing how many Conti ProContacts in the Outbacks size that I was able to find on Craigslist. I wonder if the ones that won'f RFB properly get on there? That is why I did not want to buy a used one.
RobMunach is offline   Reply With Quote Quick reply to this message
Old 11-06-2012, 01:26 PM   #16 (permalink)
Registered User
 
Join Date: Mar 2010
Car: 2010 Outback 3.6R
Posts: 133
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by grossgary View Post
do whatever you want. replace all 4 tires and be done with it, you've already decided.

there are options if you want or replace just two but you've decided and moved on, just get on with it you're good to go!

new car owners tend to be far pickier than what actual, practical experience may dictate, what can and can't be done by experience, what failure modes are out there, causes, folks actually tearing apart transmissions, etc. most folks aren't going to trade in new ownership anecdotes and philosophies and adopt practical, older vehicle ownership routines.

there is truth in both realms but best to stick with yours, which you've already seemingly decided on.
I will not lie, I'm excited about this car going out of warranty! This is my first new car and my nature demands I get all the value out of it I can. I've driven beaters most of my life and only bought new becasue we had babies.

However, I would probably not buy 4 new tires but for the warnings, apparently prudent, about tires of different sizes. This thread has given me a lot of useful responses which have helped considerably. In the end I will indeed "do whatever [I] want." This is sort of an opportuinty to get 4 new tires, which will carry me around for another 3 years at least.
arizonaadam is offline   Reply With Quote Quick reply to this message
Old 11-06-2012, 01:28 PM   #17 (permalink)
Registered User
 
Green LTD's Avatar
 
Join Date: Aug 2010
Location: Minnesota
Car: 2011 Cypress Green 2.5 ltd
Posts: 770
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by arizonaadam View Post
I'm fairly sure they mean circumference, not diameter.
You may be correct-So I could do the math if I knew the tires were inflated to the proper pressure etc., but sounds like 1/2 inch in circumference is pretty close to the 2/32 number then. Given actual working diameter of installed tires at given pressures the radius from road surface to center of axle can vary quite a bit. Tread depth with a simple depth gauge on the exact same tire from the same manufacturer would be a much simpler calculation. The op and others all are using the standard 2/32 tread depth. Certainly if installing tires of different style or manufacturer the circumference as measured off the car at a standard pressure would be your best bet. In which case I would have taken the gift tires, got what mileage I could from them, and bought good tires then.
Green LTD is offline   Reply With Quote Quick reply to this message
Old 11-06-2012, 02:10 PM   #18 (permalink)
Registered User
 
Join Date: Jun 2006
Location: Nepean ON Canada
Car: 07 OBW 2.5i Touring (SE) D-4AT
Posts: 8,357
Feedback Score: 4 reviews
Default

Quote:
Originally Posted by arizonaadam View Post
Thanks. I see that 2/32 number on Tirerack. Is it anywhere else? Somewhere I can show the dealer?
Quote:
Originally Posted by Startiger View Post
On the 2/32" number, that is out of the owner's manual. They can't argue with literature directly from Subaru.
Quote:
Originally Posted by Nickshu View Post
It's in the owners manual. It's also in the factory service manual, . . ..
Quote:
Originally Posted by Green LTD View Post
. . .sounds like 1/2 inch in circumference is pretty close to the 2/32 number then. . . .
I have never found a Subaru document with a tread depth difference specification related to the AWD system. (We're not talking about the minimum tread depth for safety, that is, the point where a tire should be replaced.) Nor have I see a 1/2-inch circumference specification. If it's in the Owners Manual and/or the FSM, please, please, identify where and post a photo or complete quote.

The only clearly stated requirement I've found is that the rolling circumference of the four tires should be within approximately 1/4-inch of each other. On a 17 inch tire in the size ranges installed on recent Subarus, a 1/4-inch difference in circumference between tires would result from less than a 2/32-inch difference in tread depth.

Measuring tread depth for the purpose of checking for the circumference dimension requirement is only an approximation. If two tires (same brand, model, size, and inflation have tread depths that differ by almost 2/32, there's a pretty good chance they're circumferences will be different by more than 1/4-inch.

As far as something to show the dealer, suggest they look at the related article in the December 2010 issue of Subaru TechTips (it's available from the Subaru STIS website -- dealers should have ready access), which is also shown in: Tire circumference spec confirmed by Subaru (TechTips).
plain OM is offline   Reply With Quote Quick reply to this message
Old 11-06-2012, 03:41 PM   #19 (permalink)
Registered User
 
Saint J VT's Avatar
 
Join Date: Aug 2012
Location: Green Mountains
Car: '05 2.5i H4 4-Speed Auto w/Sportshift
Posts: 514
Feedback Score: 0 reviews
Exclamation

We had the right-front tire that was Bridgestone, blow-out from a piece of rebar concrete reinforcement rod sticking out of a concrete curb at a lousy tight-turn just at a bridge. We had to use the donut spare.

I measured my depth, which was about 2/3 gone and went online and found an identical used tire and had it shipped to me. The tire depth was astoundingly-the same as our existing three tires!

When my mechanic went to install the 'new' used tire, he showed me where two holes had been patched with rubber plugs. I told him to cut them out and repair the tire the way a radial should be patched, from the interior. So, I spent about $32 for the used tire, about $20 to have it shipped to me, then, about $38 for my mechanic to repair two holes, mount & balance the new-used tire.

All that for about $90 total. Looking back on it, I would have been better off just buying four new tires.

As for the aligning kit, there are special shims, cam bolts, etc. to do the rear aligning with the front. I also questioned some similar charge at one point in time, as I recall.
Saint J VT is offline   Reply With Quote Quick reply to this message
Old 11-06-2012, 05:23 PM   #20 (permalink)
Registered User
 
Green LTD's Avatar
 
Join Date: Aug 2010
Location: Minnesota
Car: 2011 Cypress Green 2.5 ltd
Posts: 770
Feedback Score: 0 reviews
Default

If my calculations are close, based on a 27.6" tire, 1/2 inch in circumference difference is equal to 2.5/32 of tread depth. this is 1/64" or .0156" over the always given 2/32". If you are under the 1/2 inch measured circumference you are very close. (Most tape measures are not going to be able to measure it!)
Green LTD is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply


Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Subaru Outback - Subaru Outback Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 02:41 AM.



Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.3.2
Copyright 2009-2010 SubaruOutback.org. All Rights Reserved.