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Old 03-31-2005, 07:19 PM   #1
fragment
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Default I hope these tires aren't too big...

I just ordered my summer tires. Falken Azenis ST-115's in 245/40/17.

I've got 17" x 8" Prodrives with correct offset (43 if I remember right) and my rear fenders are rolled. I'm lowered on STi Pink springs.

Here's hoping they don't rub...
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Old 03-31-2005, 08:13 PM   #2
tony_subaru
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If they are too big, you can just flare your fenders
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Old 03-31-2005, 09:27 PM   #3
fragment
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see, thats *exactly* the kind of thing I'm trying to avoid.
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Old 03-31-2005, 09:31 PM   #4
Jitenshakun
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You'll have to let me know how that works. I know that 235 fits but 245....

-J
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Old 03-31-2005, 09:44 PM   #5
fragment
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I would have ordered 235's like I had before, but the 45 is too tall, and the 40 is too short.
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Old 04-01-2005, 02:07 AM   #6
benyl
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From what I have read, the 225s that come standard on the STi have a footprint closer to 235. You will probably be ok unless you have passengers in the back of the car.
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Old 04-01-2005, 12:34 PM   #7
Mike D02
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Quote:
Originally Posted by fragment
I would have ordered 235's like I had before, but the 45 is too tall, and the 40 is too short.
O/K I'm curious. Taller and shorter than what? Also,forgot to ask you what tire pressures you are using in your 17's.
Mike
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Old 04-01-2005, 02:07 PM   #8
fragment
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The 205/55R16 that was originally fitted matches the rolling diameter of the 245/40R17 with less than 1% error on the speedo. The 225/45R17 also matches, but is a little narrow for the 8" wide wheels.

As for pressures, for the street I was running 34/34 and the track was 40/42 (going from a somewhat corroded memory). But that was with 235's.
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Old 04-01-2005, 02:15 PM   #9
Jitenshakun
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I know they put 235s on the STi in Japan. I think that we get the 225s becasue they still have to work off of a volume contract.

-J
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Old 04-01-2005, 02:18 PM   #10
fragment
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So does that mean the JDM now has a different speedo gear? Or does Subaru have access to special 235/43R17's?
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Old 04-01-2005, 02:46 PM   #11
Jitenshakun
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I don't know. All I know is they get 235s and we still get the 225s.

I'd assume that they've corrected for the speedo, or maybe their's is correct and ours is out of wack.

-J
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Old 04-01-2005, 08:21 PM   #12
Mike D02
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Perhaps I am out to lunch but if you are using the transmission speedo gears from a JDM car that had 17 inch wheels then any ref.to 16 inch will no longer be valid.
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Old 04-01-2005, 08:46 PM   #13
fragment
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Quote:
Originally Posted by Mike D02
Perhaps I am out to lunch but if you are using the transmission speedo gears from a JDM car that had 17 inch wheels then any ref.to 16 inch will no longer be valid.
That's a good observation, but my driveline came out of the JDM STi version that had 225/45R17's on a 7.5" wheel. Which is the same rolling diameter as the USDM WRX 16's. Only the newest JDM STi ver9's come with the different 235's and 8" wheels.
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Old 04-02-2005, 11:50 AM   #14
Zuffy
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Let me know how the 245/40/17 fit in the rear. If they are going to rub that's where it's gonna happen. I'd like to go with 245's too for my next set. I have 235/45/17 on a 17x8, 45 offset rim now and it doesn't rub, but tight in the back. 05 STi guys are lucky that the rear fenders are effectively shaved from the factory so clearance should be far less of an issue. Man 245's would be fat and phat!
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