Did I need to replace all four tires? - Subaru Forester Owners Forum
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post #1 of 7 (permalink) Old 05-01-2009, 06:31 PM Thread Starter
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Did I need to replace all four tires?

I have an 08 FSXT, 19500 miles with the original Geos. Yesterday my tire pressure light came on. Turns out my right rear was ~8 low, so I topped it off. This morning it was ~10 low, so I knew I had a problem. I took it up to the Discount Tire by the house. They found a huge screw stuck high in the sidewall, and said that it could not be fixed at that spot. They then went on to tell me that because of the AWD system, that I need to replace all four tires together. They didn't have the Geos, so I ended up going with the YK 520s for $563 OTD.

Now my question is: did I need to replace all four tires, or was that total BS? The YK 520s seem to have received good reviews overall, so at least I feel good about that.

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post #2 of 7 (permalink) Old 05-01-2009, 06:39 PM
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You needed to replace all four tires. 19500 miles in the life of OEM Geos is enough to have significantly worn down the remaining three, and the resulting mismatch with a new tire on the fourth wheel would do bad things for the differentials.

Try a search here on the term "all four tires" for lots more discussion.

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post #3 of 7 (permalink) Old 05-01-2009, 07:08 PM
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yup, you had to buy all four tires.

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post #4 of 7 (permalink) Old 05-01-2009, 07:30 PM
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Yeah, this is the one major negative of owning a Subaru. 1=4 regarding tires.

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post #5 of 7 (permalink) Old 05-01-2009, 07:39 PM
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I was in your same situation last year. Another option to buying a new set of four is buying a single new tire and having it shaved down to match the other three. 'Makes sense when you have plenty of thread left. That's the option I went with when a pothole ruined my right front tire within a year of owning the Forester. The tires need to be within .25" in circumference NOT diameter. Unfortunately, not that many places will shave tires. Here's the thread with all the info you need courtesy of the SF.org braintrust.

Need one new tire in front . . .

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post #6 of 7 (permalink) Old 05-05-2009, 05:53 PM
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another option would be to get a full-sized spare tire and keep it part of your regular rotation (i.e five tire rotation)..... at least, if you have to replace all four tires, you could delay and do it when the time is more convenient for your pocket book.

09 Full Size Spare Fitment


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post #7 of 7 (permalink) Old 05-05-2009, 06:41 PM
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Shaving would be the practical thing to do - if you can find a place that'll do it, and if you've still got good service life left on the other three tires.


I used that as an opportunity to clear the purchase of four new tires with the wifey.

Don't tell her that.

And yes, she already knows that I have a tire fetish.

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