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Old 11-23-2004, 07:18 PM   #1
twotacosfor99cents
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Default Widest possible tire on 05 STi?

What's the widest possible tire that you can fit under the fender on a 05 STi? 275 on a 9" wide 48 offset 17-18" wheel? I don't want the tires to stick out past the fenders.

Let me know.

-Ryan
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Old 11-23-2004, 10:35 PM   #2
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Try it and let us know how it works
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Old 11-24-2004, 01:54 AM   #3
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Quote:
Originally Posted by twotacosfor99cents
What's the widest possible tire that you can fit under the fender on a 05 STi? 275 on a 9" wide 48 offset 17-18" wheel? I don't want the tires to stick out past the fenders.

Let me know.

-Ryan
275s on a 48 offset WILL stick out past the fenders. Do that math - a 275 is nearly 2" wider than the stock tire which means the tire will stick out at least 1" farther than the stock tire, then add 5mm for the new offset.
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Old 11-24-2004, 08:06 AM   #4
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i believe someone was running 255 on their 04 sti.
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Old 11-24-2004, 10:55 AM   #5
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with having to do the offset for some wheels for track days will this void my warranty. how easy is it to change the offset? does changing the offset weaken any parts of the car? (i'm sure all stupid questions but i've been dieing to know)
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Old 11-24-2004, 10:58 AM   #6
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Quote:
Originally Posted by slowstangguy
with having to do the offset for some wheels for track days will this void my warranty. how easy is it to change the offset? does changing the offset weaken any parts of the car? (i'm sure all stupid questions but i've been dieing to know)
How are you suppose to change your offset besides changing the actual rim? Please have some what of an understand of what "offset" is before asking these funny questions.
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Old 11-24-2004, 11:01 AM   #7
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oh and would 285 or 275's on a 17x9 wheel fit under an 05 sti with aftermarket springs?
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Old 11-24-2004, 12:08 PM   #8
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I am currently runnin 255 on a 04 sti. Toyo ra-1's. Enkei tarmac wheels, 17x9 front and 17x8.5 rear. No fender rolling, no rubbing. Front are et53 and rear's are et48.
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Old 11-24-2004, 12:13 PM   #9
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Quote:
Originally Posted by Lordhowe
How are you suppose to change your offset besides changing the actual rim? Please have some what of an understand of what "offset" is before asking these funny questions.
Well, he could use spacers to lower the offset. That would change it without changing the actual rim. It would increase the likelihood of rubbing the fenders too.

Neil.
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Old 11-24-2004, 10:01 PM   #10
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Brand of tires will make a big difference...I currently have falkens 255 35 18s no rub at all...looking to bumpem up to 265 35 18s with in a few weeks...

Areg
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Old 11-25-2004, 02:59 PM   #11
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pics anyone?
and 18x8.75 or so with a 255x40 to see how far they come to the fender would be nice. Searcing for that on google and here shows a lot, but doesnt specify tire/wheel size
thanks
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Old 08-13-2009, 06:07 PM   #12
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I desperately need new tires(worn until flat tire!) and am going to go with new rim/tire setup. I see you are running 255s soon to be 265 35 18s. What rim size are you running it with? Thanks
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Old 08-13-2009, 06:17 PM   #13
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You have about 10-15mm to work with between stock tire and the strut. You have about 15-20mm to work with between stock tire and the rear fender (assuming 25" or less of tire height). This works out to 255/40/17 or 255/35/18 at +48 (8.5" or 9.0" of wheel width is ideal, hard to find with enough offset) or so with maybe a slight rear fender roll. More offset would possibly help but you'll get really close to the strut.

Or, you can start removing your fenders and do some custom fab up front and run whatever width you want.
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Old 08-13-2009, 06:28 PM   #14
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Thanks! This is very helpful. So tire rub is more of an issue in back than the front? I have no problem with custom fab work, but would be happy with a 18x9 48 offset running 255 or 265/35 tires. Thanks again
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Old 08-13-2009, 06:37 PM   #15
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hold on while i dig up a pic.....
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Old 08-13-2009, 06:40 PM   #16
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I would deff stay in the range between 245-275. If you got a widebody on it you could run bigger but ive seen 265's and they are freakin nice!!!
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Old 08-13-2009, 06:45 PM   #17
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Quote:
Originally Posted by Sev View Post
Brand of tires will make a big difference...I currently have falkens 255 35 18s no rub at all...looking to bumpem up to 265 35 18s with in a few weeks...

Areg
had 255-35r18 for a while,wasj sut about perfect.tried a 265,it looked cool as hell rubbed a little
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Old 08-13-2009, 06:49 PM   #18
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Thanks for the help guys. You told me exactly what I needed to know!
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Old 08-13-2009, 06:51 PM   #19
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Quote:
Originally Posted by adrenalinejunkie View Post
Thanks! This is very helpful. So tire rub is more of an issue in back than the front? I have no problem with custom fab work, but would be happy with a 18x9 48 offset running 255 or 265/35 tires. Thanks again
You're lucky you have 5x114.3. It's hell to find 9" of rim width at +48 or better with brembo clearance. Still, double check that they are really +48 and they clear brembos without spacers (which would effectively reduce the offset). Note that there's no problem running 255/35/18 on an 18x8.5" rim.

265/35/18 is not only wider, it's also taller. You're already pushing things quite a bit and that little bit of height will mean a lot more fender has to go. 255/35/18 is 25.0" where 265/35/18 is 25.3". When you're already under the fender lip, tire height is killer. Also, if you plan on going 265, you may want less offset to avoid strut clearance. That again is even harder on your fenders. The combination of 10mm more tire, 8mm taller tires, and a few mm less offset will really take things from borderline to serious fab work.
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Old 08-13-2009, 06:54 PM   #20
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I don't think I have a 5x114.3. I have an 04 STI. Its 5x100 right?
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Old 08-13-2009, 06:54 PM   #21
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this is an 18x10 wheel i'm trying to find the tire size
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Old 08-13-2009, 06:57 PM   #22
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Originally Posted by adrenalinejunkie View Post
I don't think I have a 5x114.3. I have an 04 STI. Its 5x100 right?
OP has an 05, sorry. Yeah, you're 5x100. Where did you find 18x9" 5x100 +48 that clear brembos???
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Old 08-13-2009, 07:09 PM   #23
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thats my next step. O and it has to be gold(or il paint it) to. haha so easy......
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Old 08-13-2009, 07:56 PM   #24
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Quote:
Originally Posted by mosc View Post
You're lucky you have 5x114.3. It's hell to find 9" of rim width at +48 or better with brembo clearance. Still, double check that they are really +48 and they clear brembos without spacers (which would effectively reduce the offset). Note that there's no problem running 255/35/18 on an 18x8.5" rim.
an 18x9 +48 isn't going to clear the strut. 18x8.5 +48 with 255/35/18s fit fine with fender work but clearance between tire and strut is 1-2mm at most.

Quote:
Originally Posted by nolanator View Post
this is an 18x10 wheel i'm trying to find the tire size
most likely 255/35/18

Quote:
Originally Posted by mosc View Post
OP has an 05, sorry. Yeah, you're 5x100. Where did you find 18x9" 5x100 +48 that clear brembos???
closest to that is the rota dpt.
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Old 08-13-2009, 11:35 PM   #25
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Originally Posted by nhat View Post
an 18x9 +48 isn't going to clear the strut. 18x8.5 +48 with 255/35/18s fit fine with fender work but clearance between tire and strut is 1-2mm at most.



most likely 255/35/18



closest to that is the rota dpt.
they are 265/35/18
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