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Old 09-10-2014, 01:01 PM   #1
4doorj
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Default Need help from wheel experts

Hi just need help from you guys.
I ordered a set of wheels for my 2015 sti from a vender here. I will admit I knew nothing about wheels when ordering.
He offered me a set of 57xtreme in velvet blue 18x8.5 +33. Love the color this is what I want. I tell him I want a wheel that is close to stock, I donít want to roll fenders run weird camber. Also that I will lower it later. He says as long as I run 245/45/18 stock tires I will have no issues. I say okay because I know nothing about wheels. Wheels are now ordered on their way.
Iím excited I tell my car friends. I tell them specs. They are confused saying they donít think that will fit.
So now I am worried email the vendor tell him that it is wrong.
The explanation I get:
Yes, this is 15mm more aggressive than stock, which push the wheels out 15mm from your stock position.

No it won't hit fender. No issues when lowering.

If you go measure you current setup, put a ruler to the top of the tires and measure that to your fender, you should have 15mm to 20mm clearance to the fender.
I think to myself should I believe it, so next couple days I am up all night trying to learn about wheels. I use the rim calculator.
Stock is 18x8.5 +55, I was sold 18x8.5 +33
The difference is 22mm, so nothing like what he said. So I email him that explanation and get this:
This is 18x9.5 +38mm on stock height STI

https://www.flickr.com/photos/jdmwhe...57630051388860

18x8.5 +33 = 18x9.5 +45 , which sit 7 mm tuck in vs 38mm 18x9.5

As long as the tires are stock size (245/40/18), you will be ok.

I guess I have to go with what he says.
The wheel comes in, it doesnít fit


I show him the pics, he says it should fit.
He sends me some examples. I respond in red:
Here is 18x9.0 +32mm offset (6mm more aggressive that you) , 1" drop

NASIOC - View Single Post - 2015 WRX/STi Aftermarket wheel and tire fitment

This one is wrx I think which sits higher so 1 inch drop looks like sti. But it looks like it sits right under the fender. You would hit under a hard bump. I put this in the calculator this is only 1mm more aggressive

Here is 18x8.5 +38mm offset (stock height / no drop), using 245/48/18 , 5mm only less aggressive

NASIOC - View Single Post - 2015 WRX/STi Aftermarket wheel and tire fitment

This one is 5mm less and it looks like it fits wayyy better





Here is 18x9.0 +40mm offset (same spec as you), no drop

NASIOC - View Single Post - 2015 WRX/STi Aftermarket wheel and tire fitment
This one im not to sure how this is the same spec as me, the offset is what makes it different. this one according to rim calculator sits 7mm less aggressive then mine. Which is why it fits better


Here is 18x9.5 +38mm with even wider tires 265/35/18 , no drop , 6mm more aggressive than you

NASIOC - View Single Post - 2015 WRX/STi Aftermarket wheel and tire fitment

Agaom the width isnt the problem its the offset which brings this one further then stock. This one is 5mm less aggressive on bringing it closer to the fender


Here is 18x9.5 +42mm (same spec as you), running larger tires , no drop

NASIOC - View Single Post - 2015 WRX/STi Aftermarket wheel and tire fitment

This I'm not sure how your thinking it's the same as mine again this is 9mm further away from the fender making it safer



He then responds:
Based on what other user are doing and it fits.

The best example are the 18x9.0 +32mm which are 6mm more aggressive that your setup.





I send him some pictures of rim calculator:

This compares stock to what he sold me:

This one shows the sizes he says are the same:

This is comparing stock to what he says is equivalent to what he sold me:







Please let me know what you guys think. I just wanted a rim that fit stock tires, fits with no fender issues, I didnít want to mess with camber.
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Old 09-10-2014, 01:28 PM   #2
Bikelok
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Send them back.

They don't fit (without lots of fender work).

He's blind if he does not see it in your pictures.

Looks like you did your research (unfortunately after the fact) and can now answer your own question.


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Old 09-10-2014, 02:11 PM   #3
Badler
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Those should fit no problem? Throw a little camber at them if you must. 245/45R18 is too tall of a tire.

However, those look more aggressive than a 8.5 +33. Are you sure they're not 9.5 wide? That would make more sense.
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Old 09-10-2014, 02:18 PM   #4
sc00by4life
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Quote:
Originally Posted by Badler View Post
Those should fit no problem? Throw a little camber at them if you must. 245/45R18 is too tall of a tire.
This.

245/40 max.

Quote:
However, those look more aggressive than a 8.5 +33. Are you sure they're not 9.5 wide? That would make more sense.
I'm guessing the car is still in the air. This causes the wheels to appear more aggressive than they really are.

once you drop it down and get the weight on the suspension it should fit no problem, especially compared to some of the setups the guys in the 2015 threads are running without modification.
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Old 09-10-2014, 02:27 PM   #5
4doorj
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Quote:
Originally Posted by Badler View Post
Those should fit no problem? Throw a little camber at them if you must. 245/45R18 is too tall of a tire.

However, those look more aggressive than a 8.5 +33. Are you sure they're not 9.5 wide? That would make more sense.

Thats the thing when I ordered it I told him I do not want to roll fenders or run camber.
And yes I'm sure its 8.5
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Old 09-10-2014, 02:31 PM   #6
4doorj
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Quote:
Originally Posted by sc00by4life View Post
This.

245/40 max.



I'm guessing the car is still in the air. This causes the wheels to appear more aggressive than they really are.

once you drop it down and get the weight on the suspension it should fit no problem, especially compared to some of the setups the guys in the 2015 threads are running without modification.
I compared it to another stock wheel and this one is sticking out way further.


From the calculations it shows that its 22mm out towards the fender, which I don't think there is enough room. After load there is no way that would camber that much to fit that??? I was told I would be tucked in if I was lowered.

Also when he says the one wheel size 18x9.5 +40, there is no way its equal to what I was sold 18x8.5 +33 ??? Which is why I'm assuming there are alot sold in that offset.


Also that one he posted where he said fit. The wheel it sitting right under the fender. To me that doesnt fit easily. Hitting a hard enough bump you would hit the fender
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Old 09-10-2014, 02:35 PM   #7
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The car is lowered a decent amount, and is running at least 20mm more rubber than you and minimal camber.

I easily fit an 18x8.5 +30 with a 245/40 (effective) on my SG Forester which has somewhat comparable fender room. Maybe 1/2" gap in the front, 1" gap in the rear. No fender mods, no rubbing.
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Old 09-10-2014, 02:37 PM   #8
4doorj
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Quote:
Originally Posted by sc00by4life View Post
The car is lowered a decent amount, and is running at least 20mm more rubber than you.
Thats 245/40/18 same as mine. Thats only lowered 1". I believe the WRX sits higher then the STI
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Old 09-10-2014, 02:50 PM   #9
tawheed
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Yeah, I would take them back.. Doesn't look like they would tuck like was described and the main thing you were looking for is stock specs!
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Old 09-10-2014, 04:02 PM   #10
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Have you checked the current camber on the car? Those should fit fit with no problems as others have said.
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Old 09-10-2014, 04:07 PM   #11
4doorj
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Quote:
Originally Posted by Badler View Post
Have you checked the current camber on the car? Those should fit fit with no problems as others have said.
Everyone else? just you and one other guy, two other guys says no and to send back.
Either way I said I wanted close to stock, not something that will be super close or on fender.
I don't think it will fit. And I don't want to do anything to make it fit. If I lower I don't want to have any issues.

Camber is stock, the car is stock right now.
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Old 09-10-2014, 04:14 PM   #12
4doorj
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Also messaged T3h_Clap on iwsti, who is suppodley the wheel expert for sti's.
He said:

I forwarded him one of the first emails I got from the vendor
Originally Posted by 4doorj
hey quick question for you if you dont mind me asking
heard your the best for answering rim questions
i was sold a set of rims saying it would fit....
i have a 2015 sti...
i was sold 18x8.5 +33
will this fit?
when I questioned him I got
This is 18x9.5 +38mm on stock height STI

https://www.flickr.com/photos/jdmwhe...57630051388860

18x8.5 +33 = 18x9.5 +45 , which sit 7 mm tuck in vs 38mm 18x9.5

As long as the tires are stock size (245/40/18), you will be ok.

T3h_Clap responded

who sold them to you?

The +33mm moves the entire tire out 5mm further then the 18x9.5 +38mm and has more fitment headaches then the correct size wheel.

You would need to reduce the tire size to avoid headaches.
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Old 09-10-2014, 04:29 PM   #13
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Camber is stock doesn't mean anything. It could be off from the get go. It seems like you've already made up your mind though. Just send them back already.

Not to discredit T3h-Clap, but I'm guessing he didn't notice you were comparing 9.5 and 8.5 widths. Looks like he just did the backspacing math and didn't factor in the increased wheel width.
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Old 09-10-2014, 04:34 PM   #14
4doorj
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Quote:
Originally Posted by Badler View Post
Camber is stock doesn't mean anything. It could be off from the get go. It seems like you've already made up your mind though. Just send them back already.

Not to discredit T3h-Clap, but I'm guessing he didn't notice you were comparing 9.5 and 8.5 widths. Looks like he just did the backspacing math and didn't factor in the increased wheel width.

It's not the width its the offset thats making it the problem.
If you look at the pics the (18x8.5 +33) still sticks out further the the stock size (18x8.5 +55) by 22mm, the (18x8.5 +33) still sticks out further then the (18x9.5+38 or +40)



That's the thing I am trying to send it back but he keeps saying its suppose to fit.
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Old 09-10-2014, 04:40 PM   #15
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It doesn't stick out further than the 18x9.5 +38 is what I'm getting at. Yes the backspacing is +5mm, but the fender side of the 9.5 is ~13mm wider than 8.5. The 9.5 is still 7-8mm wider on the fender side, even with the offset.
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Old 09-10-2014, 04:48 PM   #16
4doorj
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Quote:
Originally Posted by Badler View Post
It doesn't stick out further than the 18x9.5 +38 is what I'm getting at. Yes the backspacing is +5mm, but the fender side of the 9.5 is ~13mm wider than 8.5. The 9.5 is still 7-8mm wider on the fender side, even with the offset.
I'm just going off a rim calculator
It shows like what the clap is saying. It shows that its sticking 5mm closer to fender.
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Old 09-10-2014, 04:54 PM   #17
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You're not understanding what I'm saying. When you increase the width to 9.5" where does the extra inch go? Pretend the tire isn't on the wheel in those illustrations. Look at the wheel face part, see how the tire is hanging over on the 8.5 and not the 9.5?
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Old 09-10-2014, 05:00 PM   #18
sc00by4life
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Quote:
Originally Posted by 4doorj View Post
Everyone else? just you and one other guy, two other guys says no and to send back.
Either way I said I wanted close to stock, not something that will be super close or on fender.
I don't think it will fit. And I don't want to do anything to make it fit. If I lower I don't want to have any issues.

Camber is stock, the car is stock right now.
Aside from Bikelok, I have never seen the other posters post in here. ever.

I would take their advice with a grain of salt.

Quote:
Originally Posted by Badler View Post
Camber is stock doesn't mean anything. It could be off from the get go. It seems like you've already made up your mind though. Just send them back already.

Not to discredit T3h-Clap, but I'm guessing he didn't notice you were comparing 9.5 and 8.5 widths. Looks like he just did the backspacing math and didn't factor in the increased wheel width.
This. Teh_Clap's math is completely wrong.

18x9.5 +38 EXTENDS 8MM FURTHER than the 18x8.5 +33.

Quote:
Originally Posted by 4doorj View Post
It's not the width its the offset thats making it the problem.
You asked for help, just shut up and listen. You are confusing yourself.

Offset ALONE means NOTHING because +30 on an 8.5" wheel is NOT the same as +30 on a 9.5" wheel.

Quote:
If you look at the pics the (18x8.5 +33) still sticks out further the the stock size (18x8.5 +55) by 22mm, the (18x8.5 +33) still sticks out further then the (18x9.5+38 or +40)
NO IT DOESN'T.

18x8.5 WILL:

retract 8mm compared to a 18x9.5 +38
retract 6mm compared to a 18x9.5 +40.

And I'll say it again you DO NOT have the weight of the car on the wheel in your picture of test fitment which means you have absolutely no clue how it will fit with the weight on the ground. TRUST ME. IT WILL FIT.
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Old 09-10-2014, 05:07 PM   #19
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Quote:
Originally Posted by sc00by4life View Post
This. Teh_Clap's math is completely wrong.

18x9.5 +38 EXTENDS 8MM FURTHER than the 18x8.5 +33.

And I'll say it again you DO NOT have the weight of the car on the wheel in your picture of test fitment which means you have absolutely no clue how it will fit with the weight on the ground. TRUST ME. IT WILL FIT.
Quote:
Originally Posted by Badler View Post
It doesn't stick out further than the 18x9.5 +38 is what I'm getting at. Yes the backspacing is +5mm, but the fender side of the 9.5 is ~13mm wider than 8.5. The 9.5 is still 7-8mm wider on the fender side, even with the offset.
I already tried explaining that but he is hung up on the offset part. Also, who knows if he's got +1* of camber there? He also probably thinks the camber curve is a straight vertical line.
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Old 09-10-2014, 05:14 PM   #20
4doorj
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I know camber is not straight from stock.
I'm just trying to understand thats all. I'm just getting different answers from everywhere.
I'm just trying to be as careful as I can because I have to pay to get tires mounted if it fits great, if it doesnt I have to pay again to unmount them.

I have you guys saying it will fit, calculator sayings that this is 22mm closer to fender.
I just want to make sure I'm doing it right thats all. I'm not trying to not listen to you guys.

I also posted it on iwsti and got a reply saying it will poke but I will be fine at stock height, also that if I lower I will have to run camber.

I don't know what's right, thats why I'm trying to learn. It's alot of money I just don't want to screw up.


http://www.iwsti.com/forums/2015-sti...l-experts.html
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Old 09-10-2014, 05:18 PM   #21
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22mm closer to the fender....from the stock 18x8.5 +55. you are confusing yourself because you don't fully understand it which is normal.

it will NOT poke. It will NOT cause issues, it WILL fit fine.

You have to run "camber" regardless of ride height. 0 camber is bad.

the problem with wheel fitment threads is **** brains like the noobs in this post and that guy on IWSTI who clearly don't understand what they're talking about or looking at.
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Old 09-10-2014, 05:34 PM   #22
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Also, the cool thing about the '08+ is how wide of wheels/tires you can fit without killing your fenders. Why 8.5?
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Old 09-10-2014, 05:37 PM   #23
4doorj
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Quote:
Originally Posted by Badler View Post
Also, the cool thing about the '08+ is how wide of wheels/tires you can fit without killing your fenders. Why 8.5?

Because of the limited color. The velvet marine blue was a limited color. They were discontinued. I was actually looking for them and stumbled on these when he messaged me. Its not the best sized rim but I just did it for the color. It's not a regular size/offset rim that most people have been using. Which is why I started questioning it. Plus being in stock makes it easier for impulse buying.
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Old 09-10-2014, 05:44 PM   #24
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You know you can have any wheel painted any color you want right?
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Old 09-11-2014, 12:46 AM   #25
Bikelok
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Quote:
Originally Posted by Bikelok View Post
Send them back.

They don't fit (without lots of fender work).

He's blind if he does not see it in your pictures.

Looks like you did your research (unfortunately after the fact) and can now answer your own question.


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Doh!!!
Never mind. I don't know what I was looking at, but I thought the OP was talking about a GG wagon.

I'm a knucklehead.




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