are OEM tires made differently? - Subaru Forester Owners Forum
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post #1 of 10 (permalink) Old 09-30-2016, 06:47 PM Thread Starter
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are OEM tires made differently?

I just replaced my OEM Geolandar G91s after only 30,000 miles as they were all, despite regular rotation and proper inflation, worn to the nub. The guy at the shop said that OEM tires wear earlier because they are made softer than other tires of the same, exact model, to make a softer and more pleasant test drive for potential buyers. Not sure if I buy that, or not, but these did need replacing much earlier than they should have. Curious if that sounds plausible, or not.

FYI, with snow season coming, I could no longer wait to see if Yokohama would introduce a 225/60/17-sized G015, so went with the AT-S.

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post #2 of 10 (permalink) Old 09-30-2016, 07:02 PM
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I can think of one member who might have an opinion on this. Calling @TSi+WRX

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post #3 of 10 (permalink) Old 09-30-2016, 09:53 PM
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What tire dealer told you is true. OEM tires are crappy in most of the cases. Simple Google search will tell you that regardless of which car and model you read about. Look closely on tires. You will see treadware number and performance rating. The lower the treadware number, the lower life of tire is. You have made good decision of changing the tires. Trust me, you will feel lot confident with non OEM tires in snow.

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post #4 of 10 (permalink) Old 10-01-2016, 07:03 AM Thread Starter
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I know that OEM tires are usually not great, but was surprised to hear from a tire shop that tires supplied for manufacturers (OEM) are made differently than the same exact make/models sold aftermarket. Still not sure if I buy it, or not.
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post #5 of 10 (permalink) Old 10-01-2016, 07:34 AM
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I wouldn't be surprised. Auto manufacturers buy a single model of tire in massive quantities. It's not like they buy them off the shelf. They buy them from (in this case Yokohama) at a price point and with requirements for pressure, ride quality, load, etc. The price trumps everything, though. OE tires have a lousy reputation for a reason.

Like the Bridgestone RE92 that came on the GD Impreza that everyone despised. Cheap, performed poorly in most conditions (including dry) and wore quickly.
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post #6 of 10 (permalink) Old 10-01-2016, 08:30 AM
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They can be, and they can either be "better" or "worse" than the tires you would buy at a tire store. I'm not sure if Subaru has Subaru specified tires as does Porsche and BMW, but you can buy a "N Spec" Porsche Tire or you can buy the exact same make model size tire that's not a "N Spec" Porsche Tire. Will there be difference ... who knows.


When Identical Tires Aren?t The Same


Porsche N spec Approval. Understanding it When Choosing Tires
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post #7 of 10 (permalink) Old 10-02-2016, 08:09 AM
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My last car was a Honda, that put Continental tires on the car at the factory. These tires lasted 19 to 21k miles on every car noted on the Honda forum. A really soft tire to impress new owners of the quiet ride. I have a 2011 Subaru Forester that has Yokohama OEM tires with 23k miles on them, and they are good until next Fall. I park my 2015 Forester with 15k miles on it next to the 2011, and see that the tread wear is only slightly less on the 2011. Not bad. Still, I'm putting Michelin's on when I finally get new tires.

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post #8 of 10 (permalink) Old 10-02-2016, 12:32 PM
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Quote:
Originally Posted by good dog View Post
I can think of one member who might have an opinion on this. Calling @TSi+WRX
Sorry! For some reason, I missed the page!

----

ckimmerle, as the other members have written - and as regajohn picked out very specifically - yes, the OEs do spend some resources to work with their selected tire manufacture to tune the vehicle/tire combination to suit their desired characteristics.

Exactly what those traits are, however, I do not know in terms of our Subarus, and I am truly not sure if any "technician" at the level of can really say. All that I can relate is that I saw/felt first-hand the differences that this OE-level of tuning did on the Dubai Autodrome, in high-end performance vehicles driven hard by factory test-drivers who each was specifically assigned to tune that specific tire for the vehicle manufacturers' desired performance traits.

Whether these differences can be seen or even generalized accurately in a general vehicle service bay? That I cannot say......

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post #9 of 10 (permalink) Old 10-02-2016, 07:52 PM Thread Starter
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Very interesting. Thanks for all the input. Guess I learned something which, over my 55 years, eluded me.
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post #10 of 10 (permalink) Old 10-03-2016, 12:39 PM
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^ Hey, I didn't know, for a while, too, exactly what it meant for a tire to be homologated for a certain marque. :) Everyone's here to learn, including me!!!! :)


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  Subaru Forester Owners Forum > Technical Forums and Vehicle Assistance > Wheels and Tires

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