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Old 07-11-2012, 07:26 PM   #1
StackSmasher
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So, Im an idiot and curbed my wheels and tires with about 2500 miles on them

There was a chunk torn out of the sidewall of each one on the passenger side. One minor, one down to the damn belting.

SO I went ahead and replaced the two tires. I go to Firestone since I know the manager pretty well. They ordered the tires for me, since they obviously dont stock Dunlop SP series tires.

They replaced the two tires. On the way home, I notice that when I accelerate the car pulls HARD to the side with the new tires. The guy at Firestone claims it has to be an alignment issue.

However I drove around for 5 days with the F'ed up tires and had NO pull to that side at all.

Any insight? Do they just need to be broken in. Do I need an alignment with the new tires ( I wanted one , but they said they were too busy and that I needed to come back tomorrow.)
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Last edited by StackSmasher; 07-12-2012 at 08:45 AM.
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Old 07-11-2012, 10:19 PM   #2
Blktrax
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You do realize a Subaru is ALL wheel drive ALL the time and, two different tires regardless of the same Tire Spec size are not the same rolling circumference.

Unless measured mounted and inflated and within 1/4 of an inch around the center of the tread...

This will destroy your center diff and possibly the limited slips at the Front and Rear

GET 4 matching tires preferably with the same DOT production date. or order 2 of the dunlops...
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Old 07-12-2012, 01:30 AM   #3
WRXSteye20008
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OR order from TireRack and take the tread depths from the two not messed up tires and get an average. With that average, call TireRack (as for Luke http://forums.nasioc.com/forums/member.php?u=1215) and order two new tires and tell them you need the tired shaved down to the average depth (the number you got) of the other two tires. That way all 4 tires are at the same depth. I just had to do that when ordering 1 tire from a wheel I broke with tire. Get that taken care of ASAP.

Since you already have the tires, find a local shop that will shave the tires for you.

Last edited by WRXSteye20008; 07-12-2012 at 01:35 AM.
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Old 07-12-2012, 08:35 AM   #4
CopperTopNWOR
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Like they said, figure out what the tread depth difference is between the tires. The solution may be to put the new tires both on the front of the car (provided you can rotate them to that position) and put the older ones on the back since the front is going to wear a touch faster. At least that way you will have the same tread depth right to left and maybe a slight difference front to rear. But you need to get them shaved down more than likely. Putting the new tires both on the front is just to try to fix some of the behavior.
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Old 07-12-2012, 08:47 AM   #5
StackSmasher
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Thanks for the help guys. I am at Firestone and they are going to rebalance them and make sure the are all equally inflated. Thy said they may have to shave them as well.

There were only 2500 miles on the other tires so is that really enough tread wear to cause a difference?
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Old 07-12-2012, 12:00 PM   #6
NJJer
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If the new tires are bigger than old ones it should be pulling to the old tire side. The new ones being larger will make it go that way.

Think rolling a cone around on the floor. Larger side steers it towards smaller side.

Check alignment since you hit it hard enough to screw up two wheels. I bet it's off. Also check tire pressures.
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Old 07-12-2012, 12:31 PM   #7
69subaru360
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Quote:
Originally Posted by StackSmasher View Post
There were only 2500 miles on the other tires so is that really enough tread wear to cause a difference?
No.


Put the two new on the back and the two old on the front. Problem solved.
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Old 07-12-2012, 12:59 PM   #8
StackSmasher
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Thanks again for all you guys input.


Turns out Firestone rushed the install and did not balance all four tires or even check to make sure inflation was equal accross the board.
I brought up the fact that a new diffwould have cost me a TON of money and it was unacceptable. They apologized and remounted and balanced and inflated them properly.

There was only 1/32 difference in tread so no shaving needed. They also put the new tires on the same axle.

Its no longer pulling under acceleration
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Old 07-12-2012, 02:22 PM   #9
CopperTopNWOR
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Glad to hear you got it fixed. Properly balanced inflated and axle location definately helps.

Was the alignment ok?
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Old 07-12-2012, 02:44 PM   #10
WRX_02_227
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Blah tires! On Tuesday I noticed my car needs tires pretty badly so I started looking for what to get. A few hours later my wife tells me the tire light is came on in her Forester. So she stopped at the tire place and had a big ass nail through the sidewall of the front driver side tire. So on went 4 news tires Her Hankooks still had 7/32s on them so they would have been fine for at least another year.

Couldn't I have been the one to get the big ass nail in my sidewall?
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