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Old 11-16-2012, 07:30 PM   #1
12impsprt
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Default 18x8's on a 12 Impreza Sport

I have a '12 Impreza Sport and I am currently looking on buying a set of 18 in. Wheels ( 18x8 with 45mm offset ) I just wanted to throw this out here to see if anyone can tell me or not if they know of any problems that I may run into.. Im mostly concerned about rubbing. If anybuddy has any suggestions or answers for me feel free to let me know, please!

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Old 11-16-2012, 07:35 PM   #2
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Christ on a bike.....18s are a HORRIBLE idea. They will make your car 50% slower, throw your speedometer so out of whack that it becomes a moving/not moving indicator, and increases the stress on your transmission by 400%. You needs to rethink this issue for a LONG time.
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Old 11-16-2012, 07:50 PM   #3
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umm... yeah. ok.

So do you have a valid reason why this is "so horrible" considering I'm on stock 17's right now.
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Old 11-16-2012, 07:55 PM   #4
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I will agree that 18's are a bad idea on our cars. I have a 2010 Impreza and want to downgrade to 17x9 or 17x8 not because of weight. The car needs more time to make a full rotation compared to the 16's you have on your car currently.

wheels are 18x8.5 gram lights ~22lbs per wheel.
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Old 11-16-2012, 08:03 PM   #5
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They will be fine as long as you don't have some weird tire size.
It should be a 225/40-18 (or something very close) and you won't have problems.
Depending on the wheel it might be heavier than a 16 or 17, but you won't notice it just daily driving.
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Old 11-16-2012, 08:03 PM   #6
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Quote:
Originally Posted by djinn View Post
I will agree that 18's are a bad idea on our cars. I have a 2010 Impreza and want to downgrade to 17x9 or 17x8 not because of weight. The car needs more time to make a full rotation compared to the 16's you have on your car currently.

wheels are 18x8.5 gram lights ~22lbs per wheel.
wheel diameter has no effect in that regard, that is all on the circumference of the tire used.

18x8 drastically limits tire choices. Performance wise, not an upgrade at all.
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Old 11-16-2012, 08:07 PM   #7
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Yeah you are correct on that..
Size: 18x8
Offset: 45mm
Backspacing: 6.25"
Bolt Pattern: 5-100
Rec. Tire Size: 225/40-18
Weight: 20.3lbs.

Enkei Tuning Raijin (Black)
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Old 11-16-2012, 08:41 PM   #8
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Quote:
Originally Posted by sc00by4life View Post
wheel diameter has no effect in that regard, that is all on the circumference of the tire used.

18x8 drastically limits tire choices. Performance wise, not an upgrade at all.
So you are saying if you use a 18" vs 16" there is no difference in the time it takes to make a full rotation even using recommended spec on tire size? so your 0-60 won't suffer? your acceleration won't suffer?

here is a test by car and driver on up sizing wheels from 15" to 19".

http://www.caranddriver.com/features...d-tires-tested
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Old 11-16-2012, 08:54 PM   #9
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Well your going from a stock 15" to a 19" there is going to be some noticable changes I would think. BUT going from a stock 17" to an 18" wheel (which I plan on doing) is probably not going to cause a noticable difference at all in daily driving. My soul purpose of posting this was to just make sure that stepping up to a slightly bigger wheel/tire there would be no rubbing / contact issues. Thats all I am worried about.
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Old 11-16-2012, 08:58 PM   #10
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Quote:
Originally Posted by djinn View Post
So you are saying if you use a 18" vs 16" there is no difference in the time it takes to make a full rotation even using recommended spec on tire size? so your 0-60 won't suffer? your acceleration won't suffer?

here is a test by car and driver on up sizing wheels from 15" to 19".

http://www.caranddriver.com/features...d-tires-tested
Yeah, but what he's saying is it's still the same distance to rotate. With a heavier wheel it's harder to get it rolling and harder to stop it, but it still takes the same amount of time to rotate.
Either way, it's a N/A Subaru, even if it was a turbo Subaru, you won't notice the difference daily driving.
Quote:
Originally Posted by 12impsprt View Post
Well your going from a stock 15" to a 19" there is going to be some noticable changes I would think. BUT going from a stock 17" to an 18" wheel (which I plan on doing) is probably not going to cause a noticable difference at all in daily driving. My soul purpose of posting this was to just make sure that stepping up to a slightly bigger wheel/tire there would be no rubbing / contact issues. Thats all I am worried about.
It doesn't matter. You won't see a difference in performance.
Sure if you track the car, but if you're just daily driving, you won't notice it.
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Old 11-16-2012, 10:20 PM   #11
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Yes, like I said, as long as I do not have any rubbing ro clearance issues with an 18x8 inch wheel/tire I am fine with that. This is my daily driver, N/A 2.0L car. I am not looking for performnace really. If anything in the near future, I am considering a set of lowering springs if I still have the clearance after the 18" wheels. About a 1.4 inch drop I believe.
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Old 11-16-2012, 10:44 PM   #12
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Quote:
Originally Posted by 12impsprt View Post
Yes, like I said, as long as I do not have any rubbing ro clearance issues with an 18x8 inch wheel/tire I am fine with that. This is my daily driver, N/A 2.0L car. I am not looking for performnace really. If anything in the near future, I am considering a set of lowering springs if I still have the clearance after the 18" wheels. About a 1.4 inch drop I believe.
You will be fine, enjoy.
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