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Old 12-08-2010, 07:42 AM   #1
deejaytnk
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Default Lowest OFFSET for 18x9 or 9.5 on 2005 STI???

What is the lowest offset you guys are running for your wheels on a 05 STI.

Specifically for wheels size of 18x9 and 18x9.5 WITHOUT fender rolling on lowered suspensions (0.5 to 1 in between fender and tire).

Tire conditions would be 245/35/18.
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Old 12-08-2010, 11:26 AM   #2
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You do know that the lower the offset the worse for the car it's going to be right.....? For the record, the wheels you want are redundant on a street driven Subaru, esp the latter.
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Old 12-08-2010, 11:48 AM   #3
Badler
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Without fender rolling you won't be running either of those in any offset. 245/35s are a great size for those too.
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Old 12-08-2010, 12:30 PM   #4
deejaytnk
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Default Badler & Byzantium

Badler & Byzantium,

Let me re-ask the question, what is the widest wheel to be tucked/almost flush WITHOUT fender rolling if given an offset?

Also what kind of wheel specs are you guys running?

I also believe with the research I have done is that 17x9 Rota DPT / Offset = 42 fit PERFECTLY (meaning flush or tucked depending camber) on lowered suspension WITHOUT fender rolling.

I am talking ideally with zero or a bit above zero camber, what wheel/tire specs can give a tucked, almost flush, WITHOUT fender rolling and 1 inch between tire and wheel well???
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Old 12-08-2010, 12:33 PM   #5
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There is no such thing as "almost flush" with "no fender mods".

The 18x9.5 grids MIGHT fit if you super stretch a tire, but theres no point to stretching tire if you are too ***** to roll fenders, since the point of stretching tires is to go low.

soemthing in the 9" wide in the +40 range might fit if you stick with a 235/40 or 255/35.

and for the record, 0 camber is BAD.
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Old 12-08-2010, 12:57 PM   #6
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17 X 9 DPTs in a +42 with 245/40r17s will fit with just trimming the rears. Your suspension will have a lot to do with it too.
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Old 12-08-2010, 01:09 PM   #7
deejaytnk
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Default sc00by4life

sc00by4life,

So from your knowledge with assuring evidence(personal wheel fitment and seen others), for a 18x9 wheel what OFFSET is REQUIRED with absolutely NO fender mods with 245/35/18 tires???
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Old 12-08-2010, 01:27 PM   #8
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You do not want a 245/35 tire. Way too small. You want something for nothing, it doesn't work that way. Flush(or even close) = Fender/camber mods. Stick to a 235/40 on 18 x 8.5s in the 45-50 range if you don't want to mod your fenders.
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Old 12-08-2010, 02:11 PM   #9
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Quote:
Originally Posted by deejaytnk View Post
sc00by4life,

So from your knowledge with assuring evidence(personal wheel fitment and seen others), for a 18x9 wheel what OFFSET is REQUIRED with absolutely NO fender mods with 245/35/18 tires???
like badler said, 245/35 is too small. you want either a 235/40 or 245/40, the next step up would be a 255/35. The 17x9 +42 DPT's have been known to fit a 245/40 with no fender mods, thats probably about as flush as you'll get. aggressive fitments aren't really friendly to wide tires unless you are committed to running wide tires for your set up, and will almost always require some form of fender mod, and to really get the look you're after, you want to have rolled fenders at a minimum.

so you have to either decide:

1.) am i willing to roll or pull fenders to fit the tire i want

or

2.) willing to run a different wheel/tire combo to accommodate minimal fender mods.
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Old 12-08-2010, 02:56 PM   #10
deejaytnk
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Default Badler & sc00by4life

sc00by4life & Badler,

First off, you guys never really answer my question (what is the lowest offset for 18x9 with no fender mods) but goes off on a tangent, but thats ok.

I think we all 3 agree on one thing, 17x9 / Offset = 42 clears and NO fender mods and thats with 245/40/17 tires.

Therefore we can also agree that 18x9 / Offset = 42 ALSO clears and NO fender mods with 245/40/18 tires.

DO YOU GUYS CONFIRM???

Second thing I am confused about 245/40 vs 245/35. The second number from what I have read about tire specs is a percentage multiplied by the FIRST number to get the length from the wheel's edge to the tire's edge.

For example 245/40 is 245 mm x 0.4 = 98 mm, and 245/35 x 0.35 = 85.75 mm. There is a difference of 12 mm which is about half an inch.

Why would I not put 245/35/18 on 18x9 wheels???

PLEASE CLARIFY...
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Old 12-08-2010, 05:45 PM   #11
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Do more research and come back when you can understand the answers that are being given to you. Will the 17x9 +42s fit with a 245/40r17 and not rub? Maybe at stock height with no people in the car. A lot of it depends on stiffness/height of springs/coilovers, camber settings, etc... 18x9 w/245/40r18s are NOT going to fit without mods. I'll say it three times again, research, research and more research.
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Old 12-08-2010, 07:31 PM   #12
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18x9 + 50 would fit without a roll but then you run into the whole strut clearance thing but people have done it.

I have 18x9.5's +44 (also strut clearance issues) on my 04 that has different rear fenders then you. but I could bet they would fit on a 05 with 245's if it had the same suspension as I do (coilovers with camber plates front and rear.)

this is with 265's no pull just a front and rear roll.

http://forums.nasioc.com/forums/show....php?t=2079736
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Old 12-08-2010, 08:16 PM   #13
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Quote:
Originally Posted by deejaytnk View Post
sc00by4life & Badler,

First off, you guys never really answer my question (what is the lowest offset for 18x9 with no fender mods) but goes off on a tangent, but thats ok.

I think we all 3 agree on one thing, 17x9 / Offset = 42 clears and NO fender mods and thats with 245/40/17 tires.

Therefore we can also agree that 18x9 / Offset = 42 ALSO clears and NO fender mods with 245/40/18 tires.

DO YOU GUYS CONFIRM???

Second thing I am confused about 245/40 vs 245/35. The second number from what I have read about tire specs is a percentage multiplied by the FIRST number to get the length from the wheel's edge to the tire's edge.

For example 245/40 is 245 mm x 0.4 = 98 mm, and 245/35 x 0.35 = 85.75 mm. There is a difference of 12 mm which is about half an inch.

Why would I not put 245/35/18 on 18x9 wheels???

PLEASE CLARIFY...
its a gearing issue. you dont need a 35 series sidewall.

I personally dont run 18's, so I can't confirm whether a +42ish will not rub, but my guess is that it wouldn't because the overall circumference should be close to the same.
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Old 12-09-2010, 04:03 AM   #14
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Quote:
Originally Posted by deejaytnk View Post
sc00by4life,

So from your knowledge with assuring evidence(personal wheel fitment and seen others), for a 18x9 wheel what OFFSET is REQUIRED with absolutely NO fender mods with 245/35/18 tires???
+45 or higher if you're not slammed
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Old 12-09-2010, 05:00 PM   #15
pnutbutta
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this is 18x9 +42 and I have almost no room between wheel and coilover. i need to run less camber by bolts to get it away from the strut, and plates to get it away from the wheel arches. this picture is -2 camber

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Old 12-09-2010, 05:40 PM   #16
deejaytnk
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Default To All that have replied and helped...

I found a forum thread from iwsti.com that ran a similar wheel setup I want on my STI ->

http://www.iwsti.com/forums/gd-tires...-07-sti-2.html

Me:
Rota SVN, dual drilled, 18x9, Offset = 40, Flat Black
Yokohama S. Drive 245/35/18

Him:
TE-37: 18x9 ET40
Dunlop Direzza Sport Z1 Star Spec: 255/35/18

There is definitely need of NEGATIVE CAMBER starting at stock height.

With the pictures he provided he was was about 2 inches between fender and edge of tire. If he drops up to 1 inch he was going to have struts problems and increase chance of fender bumping.

So Fender rolling and mods are A MUST for a lowered stance, including negative camber to start with. To add to the equation, with driver's and maybe passenger weight, performance coilovers or springs with stiffness rates can stabilize the suspension while rolling on wider wheels.

With the help of the Infamous Suspension Gurus like Draco-Rex and Clap, much advice with numbers were given to configure your suspension right for wider wheels.

What a coincidence he is also had Tein Flex like I do which even makes the thread a step by step mimic for me.

Well Thanks to all you guys who have given your input, especially CONDESCENDING Badler, <--- Dood, knowledge is hard to pass on to amateur tuners such as I am when your words are photo-less. However your responses is better than nothing. I seen ghost-town threads of members who are desperately seeking for help and not even a Badler was there to heckle at them, hehe...

Thanks again guys, Hail to Subie Power!
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Old 12-09-2010, 06:03 PM   #17
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That's what you consider condescending? Why do you see ghost towns of threads like this? People get tired of answering the same question over and over. Literally half the time it will be right under a thread of the same subject. Helping people who want to be helped is different than just spoon feeding people who demand an answer that they want to hear. Good luck with the fitment!
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Old 12-09-2010, 06:27 PM   #18
XanRules
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That was condescending...?

It sounds like you, sir, suffer from SCPC.
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