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Old 11-16-2008, 10:40 PM   #1
Freebs
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Default Widest tires on possible on a 2007 or 2008 STi?

Just wondering if anyone has ever fit a set of 275 or even 285ís on their STi?
If you have or know someone who has, do you know that offset they went with?
And lastly if you had pictures that would be awesome.
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Old 11-17-2008, 01:11 AM   #2
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Old 11-17-2008, 01:35 AM   #3
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Thank you ! ahah that is an awesome write up!

you dont know how much more fender flare there is on the 08's do you? I hate the tires that stick out past the body but I also like to fit as wide of a tire in there as I can.
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Old 11-17-2008, 01:39 AM   #4
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08 Sti You Can Fit A 295 Tire On Stockish Off Set
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Old 11-17-2008, 01:50 AM   #5
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Quote:
Originally Posted by jv01 View Post
08 Sti You Can Fit A 295 Tire On Stockish Off Set

with fender rolling I am asuming? and stock suspension?
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Old 11-17-2008, 02:00 AM   #6
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10-16-2008, 04:53 AM #2321
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I codrove an '08 STi at Nationals and we fit 295/30-18's on stock size wheels. No fender modification necessary with the allowed offset (+/- 1/4" of stock). Overall our wheels had an offset of +5mm from stock.
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Old 11-17-2008, 08:38 AM   #7
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Originally Posted by jv01 View Post
10-16-2008, 04:53 AM #2321
Vikingmoose
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I codrove an '08 STi at Nationals and we fit 295/30-18's on stock size wheels. No fender modification necessary with the allowed offset (+/- 1/4" of stock). Overall our wheels had an offset of +5mm from stock.

but you DID have coilovers.....NO???

THAT bit is THE important bit, here.
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Old 11-17-2008, 10:17 AM   #8
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for a street driven 08 STi it is easy with an 8.5 +48mm to +53mm to run a 265/35/18 (no fender mods, or suspension mods).

a lowered 08 STi may run into issues with that setup without a fender roll.

with a fender roll the 08 STi can get away with running a 9.5" wheel with a 275 no problem as long as the offset is in the mid 40's (stock suspension, lowered, or coilovers).

-t3h_clap
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Old 11-17-2008, 10:35 AM   #9
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Quote:
Originally Posted by Uncle Scotty View Post
but you DID have coilovers.....NO???

THAT bit is THE important bit, here.
ITS A A STOCK CAR
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Old 11-17-2008, 10:39 AM   #10
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Quote:
Originally Posted by Uncle Scotty View Post
but you DID have coilovers.....NO???

THAT bit is THE important bit, here.
ITS A - 2008 A STOCK CAR SO IT WOULD BE STOCK SUSPENSION. TIRES WOULD BE A LITTLE BIG FOR THR STREET.
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Old 11-17-2008, 10:40 AM   #11
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"LOUD NOISES"- Brick

the 08 with the right offset can squeeze alot of tire.

there is a guy running as high as a 18x9.5 +47mm with 265s on the stock suspension (believe he rolled the rear fenders).
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Old 11-17-2008, 10:48 AM   #12
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Quote:
Originally Posted by jv01 View Post
ITS A - 2008 A STOCK CAR SO IT WOULD BE STOCK SUSPENSION. TIRES WOULD BE A LITTLE BIG FOR THR STREET.
but the idiots here wanna run steamroller tires because its koo and it isnt for autox
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Old 11-17-2008, 10:55 AM   #13
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very true but i have no common sence i ran 295 hoosiers on my 06 sti on the street. common sence verys greatly between humans
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Old 11-17-2008, 01:54 PM   #14
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Quote:
Originally Posted by jv01 View Post
very true but i have no common sence i ran 295 hoosiers on my 06 sti on the street. common sence verys greatly between humans
there are LOTS and LOTS of idiots out there

I'm glad I'm not one.
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Old 11-17-2008, 02:29 PM   #15
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Quote:
Originally Posted by Uncle Scotty View Post
but the idiots here wanna run steamroller tires because its koo and it isnt for autox

I know a lot of people want it just for the look, which is one reason why I want it to but my main reason is for traction. I have always had/driven high horse power FWD and RWD cars and had nothing but traction problems (our C6 Z06 with lingenfelters 800hp TT kit will spin even at 200km down to the little 2.4L FWD 4cyl pushing out 410whp which is the daily driver which will spin at most speeds) So I am trying a different plat form and seeing what I can do with an AWD set up.
I want as wide of a tire that I can get away with at all 4 corners while still staying under the fenders, as I hate when the tires stick out past the fenders.
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Old 11-17-2008, 02:36 PM   #16
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Quote:
Originally Posted by Freebs View Post
I know a lot of people want it just for the look, which is one reason why I want it to but my main reason is for traction. I have always had/driven high horse power FWD and RWD cars and had nothing but traction problems (our C6 Z06 with lingenfelters 800hp TT kit will spin even at 200km down to the little 2.4L FWD 4cyl pushing out 410whp which is the daily driver which will spin at most speeds) So I am trying a different plat form and seeing what I can do with an AWD set up.
I want as wide of a tire that I can get away with at all 4 corners while still staying under the fenders, as I hate when the tires stick out past the fenders.
then you are pissing in the wind and killing performance rather than gaining it
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Old 11-17-2008, 03:13 PM   #17
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True, there is only so much traction you can make use of on the street. You run a wide, sticky tire, heck even a narrow, sticky tire on the street, you will never make full use of the grip unless you drive like a retard. The only time it becomes necessary is if you actually drive your car and those tires under sport conditions.

One secondary justification can be tire wear though. Four 265 tires on a 3000 lb car will last a heck of a long time just because there is so much rubber there to go through.

I'm running 245 RE01Rs on my Forester. They are complete overkill on the street. I really can't make 100% use of the grip unless I drive ridiculously, and I don't mean that term lightly. I bought them mainly as an auto-x tire/daily mix. I wanted something sticky and competitive. They just happened to be rather civil and pleasant on the street too. The width is a matter of keeping contact psi as low as possible and wear good. The contact pressure is debatable though as you really don't use the whole tire and the shape changes depending upon width, tire pressure, etc. Wear is very good though. 3-4 summers on these things appears to be quite easy. I do partially attribute that to the width being used. In terms of usable grip, I'm now on my winter tires, Blizzak LM-25s, and even these have enough grip to require some level of foolishness on the streets to use 100% of what's available. A person really needs to weight what they actually need.

A tertiary justification may be safety. Sticky means more grip then everyone around you. Width isn't safe though. There's more issues with hydroplaning for one. There's issues with camber and how the tire follows the shape of the road. There may be some bumpsteer gained from a particular wheel/tire combo.

Last edited by Back Road Runner; 11-17-2008 at 03:22 PM.
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Old 11-17-2008, 03:20 PM   #18
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Quote:
Originally Posted by Freebs View Post
I know a lot of people want it just for the look, which is one reason why I want it to but my main reason is for traction. I have always had/driven high horse power FWD and RWD cars and had nothing but traction problems (our C6 Z06 with lingenfelters 800hp TT kit will spin even at 200km down to the little 2.4L FWD 4cyl pushing out 410whp which is the daily driver which will spin at most speeds) So I am trying a different plat form and seeing what I can do with an AWD set up.
I want as wide of a tire that I can get away with at all 4 corners while still staying under the fenders, as I hate when the tires stick out past the fenders.
combination of proper suspension, differentials, alignment settings, wheel width and tire width can help maximize grip for a given situation.

slapping on the widest tire possible without addressing the other areas will still lead to the weakest link breaking. (not literally breaking).
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