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Subaru Outback/Legacy Tires and Wheels

94 messages,  Last post on Dec 29, 2008 at 9:56 AM

You are in the Subaru Legacy & Outback Forum. Your Host is kcram

What is this discussion about? Subaru Legacy, Subaru Outback, Tires, Wheels, Wagon


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#73 of 94
Re: New Tire Question [jackaspades] by paisan
Sep 03, 2008 (5:06 pm)
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Replying to: jackaspades (Sep 03, 2008 12:10 pm)

Hmm offroad tires may be difficult to find in that size.
 
I usually suggest the Sumitommo HTR+ for good all-seasons at a great price with good dry and wet handling. Not sure how they would do off road though.
 
-mike
#74 of 94
New Tire Question #2 by jackaspades
Sep 04, 2008 (2:10 pm)
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Its been suggested to me by a couple tire stores that I could go with a 215 65/16 sized tire and see minimal change in speedo/odo. I checked with my Subie dealer and although "not recommended" to deviate from manufactures scecs, that size would prob be ok. Just a little narrower and slightly taller. If so I now have a wider range of tire selection that could offer more off road capabilities and branch out into the light truck/suv tire category such as the Yokohama Geolander A T/S, or the Pirelli Scorpion STR. I know all-wheel-drives can be picky about the size of tire and ecspecially with the VDC and what the car is tuned for, I want to be safe. Thoughts?
#75 of 94
Re: New Tire Question #2 [jackaspades] by xwesx
Sep 04, 2008 (3:08 pm)
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Replying to: jackaspades (Sep 04, 2008 2:10 pm)

Well, my thinking is that if it is close to the specified size and all four are the same, there should not be added stress on the AWD system. I am really not sure if it would affect VDC, but I would think VDC tracks wheel-to-wheel spin differentials, which would not be affected by a different tire size.
#76 of 94
Re: New Tire Question #2 [xwesx] by paisan
Sep 04, 2008 (7:33 pm)
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Replying to: xwesx (Sep 04, 2008 3:08 pm)

So long as the diameter is the same on all 4 you will be ok.
 
I have always liked the Pirelli Scorpion tires. I just put the STRs on my Dad's Trooper.
 
-mike
#77 of 94
Excessive tire wear on a 2005 Legacy Outback by vdonovan
Sep 05, 2008 (12:56 pm)
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We have a 2005 LOB, purchased new. At 20K miles (almost all highway) on the original tires (Potenzas) the outside edges of the rear tires were almost worn through. The front tires were not bad.
 
I took the car to the dealer and said that the tires were wearing prematurely and there must be something wrong with the alignment or some other problem with the car. He said that it was my fault for improper inflation, in that the wear patterns indicated under-inflation. I told him I know how to keep my tires properly inflated but got nowhere. I foolishly agreed to let him replace all tires with new Potenzas. They also did a balance and alignment.
 
20k miles later with regular rotation and proper inflation, I am seeing the exact same wear pattern as before. (see photos below). I am steeling myself to go back and argue with the dealer, even though I know it's not going to do me any good. Regardless, I would like to have this problem fixed. Does anyone have ideas about what might be causing this excessive and uneven wear?
 
thanks for your help
 
Rear tires:


 
Fronts:

#78 of 94
Re: Excessive tire wear on a 2005 Legacy Outback [vdonovan] by ateixeira
Sep 05, 2008 (2:11 pm)
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Replying to: vdonovan (Sep 05, 2008 12:56 pm)

That's not too bad, to be honest.
 
You do need 4 new tires, though. The rears are totally spent and the front won't last another winter. Shop now.
#79 of 94
Re: Excessive tire wear on a 2005 Legacy Outback [vdonovan] by snowbelter
Sep 05, 2008 (2:24 pm)
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Replying to: vdonovan (Sep 05, 2008 12:56 pm)

Subaru issued a Technical Service Bulletin #05-36-07R in regards to their changing rear wheel alignment and increasing tire pressure because of uneven wear on rear tires when carrying a heavy load. When I load up my 07 OB I try to increase the pressure on the rear tires to the number indicated for pulling a trailer which also puts a load on your rear tires.
 
I can't help you with the details of the TSB as you need to subscribe (pay) to download them from subaru.com, but your dealer and/or /Subaru Customer Service might be able to enlighten you.
 
Juice is correct in your needing four new tires, but also see if your rear alignment needs correction as per the TSB.
 
I suspect that the original alignment values and tire pressures resulted in the outside edges wearing too quickly. Have you been carrying heavy loads?
#80 of 94
Re: Excessive tire wear on a 2005 Legacy Outback [snowbelter] by xwesx
Sep 05, 2008 (3:40 pm)
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Replying to: snowbelter (Sep 05, 2008 2:24 pm)

Aw, darn. I had a link to a site that listed all the Subaru TSBs, but it is no longer valid. Bummer, that. I worked long and hard to find the thing. It is ironic, to me, that Subaru would charge for TSB access when we already spent enough flippin' money on the cars in the first place!
#81 of 94
Re: Excessive tire wear on a 2005 Legacy Outback [snowbelter] by xwesx
Sep 05, 2008 (3:46 pm)
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Replying to: snowbelter (Sep 05, 2008 2:24 pm)

Perhaps this is counter-intuitive, but I would think that carrying a heavy load (which typically vests with the rear suspension) would tend to cause the inner edge of the tires to wear faster than the outer edges, as the suspension drop would put more pressure on the inside edge of the tire. Maybe not, though.
 
I noticed no oddities on my 2008 Outback's tires, and I had a heavy load (probably more than the rated capacity, to be honest) in it for the first 5500 miles of its life. Maybe they had the issue corrected by then.
 
Have you not had the 4-wheel alignment reset? If the tires are wearing unevenly, that would be a good place to start.
 
The Potenza are probably not overly reliable as a test tire, as they wear very quickly anyway. General reports seem to give them a lifespan of 20-30,000 miles.
#82 of 94
Re: Excessive tire wear on a 2005 Legacy Outback [xwesx] by snowbelter
Sep 05, 2008 (4:44 pm)
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Replying to: xwesx (Sep 05, 2008 3:46 pm)

I read somewhere that the TSB changes the toe-in specs.

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