18x8's on a 12 Impreza Sport

12impsprt · 11-16-2012, 07:30 PM

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!

Thank You!

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Unabomber · 11-16-2012, 07:35 PM

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.

12impsprt · 11-16-2012, 07:50 PM

umm... yeah. ok.

So do you have a valid reason why this is "so horrible" considering I'm on stock 17's right now.

djinn · 11-16-2012, 07:55 PM

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.

emazz104 · 11-16-2012, 08:03 PM

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.

sc00by4life · 11-16-2012, 08:03 PM

Quote:

Originally Posted by djinn

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.

12impsprt · 11-16-2012, 08:07 PM

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)

djinn · 11-16-2012, 08:41 PM

Quote:

Originally Posted by sc00by4life

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

12impsprt · 11-16-2012, 08:54 PM

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.

emazz104 · 11-16-2012, 08:58 PM

Quote:

Originally Posted by djinn

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

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.

12impsprt · 11-16-2012, 10:20 PM

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.

emazz104 · 11-16-2012, 10:44 PM

Quote:

Originally Posted by 12impsprt

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.

11-16-2012, 07:30 PM	#1
12impsprt Scooby Newbie Member#: 338092 Join Date: Nov 2012	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! Thank You! * Registered users of the site do not see these ads.

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11-16-2012, 07:35 PM	#2
Unabomber Big Ron Moderator Member#: 18062 Join Date: Apr 2002 Chapter/Region: MAIC Location: I can save you a ton of cash Vehicle: on car parts so PM me b4 j00 buy	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.

11-16-2012, 07:50 PM	#3
12impsprt Scooby Newbie Member#: 338092 Join Date: Nov 2012	umm... yeah. ok. So do you have a valid reason why this is "so horrible" considering I'm on stock 17's right now.

11-16-2012, 07:55 PM	#4
djinn Scooby Specialist Member#: 212818 Join Date: May 2009 Chapter/Region: Tri-State Location: Brooklyn Vehicle: 2010 Impreza 2.5i Satin White Pearl	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.

11-16-2012, 08:03 PM	#5
emazz104 Scooby Specialist Member#: 281811 Join Date: May 2011 Chapter/Region: NESIC Location: Vermont Vehicle: 04 WRX World Rally Blue	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.

11-16-2012, 08:07 PM	#7
12impsprt Scooby Newbie Member#: 338092 Join Date: Nov 2012	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)

11-16-2012, 08:54 PM	#9
12impsprt Scooby Newbie Member#: 338092 Join Date: Nov 2012	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.

11-16-2012, 10:20 PM	#11
12impsprt Scooby Newbie Member#: 338092 Join Date: Nov 2012	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.