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Old 10-17-2007, 05:32 PM   #1
ILSMKU2
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Default Largest tire width on stock 06 STI rims?

I searched! "largest tire width on stock STI" and got tons of threads, but after 3 pages, I didn't find anything.


What exactly is the largest tire I can mount on a stock STI with stock STI wheels?

Will 255/40/17 fit without any issues? If not, what will?



Thanks!
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Old 10-17-2007, 08:27 PM   #2
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Default large tires

ive seen 275 40 v710 on 04 sti 7.5 wide rim
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Old 10-17-2007, 08:35 PM   #3
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What kind of tires?

Street tires, a 255 40 fits AOK.

If it's not an R-comp, don't go bigger than that. If its a tire jsut for the street, no reason to go as big as a 255, you're just adding weight for no real reason. You'll never miss the little extra grip over a 235 or so.
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Old 10-17-2007, 08:37 PM   #4
ILSMKU2
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Quote:
Originally Posted by REX8 View Post
What kind of tires?

Street tires, a 255 40 fits AOK.

If it's not an R-comp, don't go bigger than that. If its a tire jsut for the street, no reason to go as big as a 255, you're just adding weight for no real reason. You'll never miss the little extra grip over a 235 or so.

Perfect. Thanks REX8.
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Old 10-17-2007, 08:56 PM   #5
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i disagree with rex8. the wider the better. wider=more grip. and jv01, show pics of that. the biggest ive seen fit without issues on a 7.5" wide rim is only a 245. try going with a nitto nt555, or the drag radial, nt555r.

nt555: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHZ4

nt555r: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHV4
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Old 10-17-2007, 09:22 PM   #6
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Quote:
Originally Posted by th3loadr View Post
i disagree with rex8. the wider the better. wider=more grip. and jv01, show pics of that. the biggest ive seen fit without issues on a 7.5" wide rim is only a 245. try going with a nitto nt555, or the drag radial, nt555r.

nt555: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHZ4

nt555r: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHV4
A distorted tread profile and deformed sidewall are not exactly optimum for performance.

Besides, why would you possibly need that much grip on the street? Why would you mount a drag radial on an STI?
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Old 10-17-2007, 09:39 PM   #7
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me. ^^ then again, ive got an insane build in mind.. lets just say ill be testing the strength of ppg's, and see what it takes to break them. ask scoobysouth, as i've pm'ed him w/ my concept... heh
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Old 10-17-2007, 09:50 PM   #8
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So you recommended drag radials because you're going to make a 1/4 mile monster or without seeing if the OP is planning on turning his car now and then?
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Old 10-17-2007, 10:22 PM   #9
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no, i recommend the dr's b/c of the fact that they arent only made for straight lines, as these really really helped me grip soo much better than the old bfg's when i went to road atlanta. they have decent life for dr's, as i put 23k miles on them, and still had a bit of tread left. they are an excellent tire if u just want a lot more grip for some autox'ing.
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Old 10-18-2007, 12:40 AM   #10
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Quote:
Originally Posted by th3loadr View Post
i disagree with rex8. the wider the better. wider=more grip. and jv01, show pics of that. the biggest ive seen fit without issues on a 7.5" wide rim is only a 245. try going with a nitto nt555, or the drag radial, nt555r.

nt555: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHZ4

nt555r: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHV4
Quote:
Originally Posted by th3loadr View Post
no, i recommend the dr's b/c of the fact that they arent only made for straight lines, as these really really helped me grip soo much better than the old bfg's when i went to road atlanta. they have decent life for dr's, as i put 23k miles on them, and still had a bit of tread left. they are an excellent tire if u just want a lot more grip for some autox'ing.

I appreciate the help, but I think you picked out the wrong tire profile.

Stock 225/45/17 = 78.45" (1992.71mm)

Suggested 245/45/17 = 80.68" (2049.26mm)

Difference 2.23" (56.55mm) I could live with one inch, but thats to much.


Unless you meant 245/40/17?



Wow. You got 23K miles on those dr's? Those have a treadware rating of 100?
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Old 10-18-2007, 01:29 AM   #11
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if your going to go any bigger than a 235 width id recommend going with 40 or less, never 45. That is 245/40/17, 275/40/17. i made the mistake of going 245/45/17 with azeni rt615's and it sometimes rubs. so if your going to go wide keep your height low. just thought i should add that..
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Old 10-18-2007, 07:48 AM   #12
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Quote:
Originally Posted by th3loadr View Post
i disagree with rex8. the wider the better. wider=more grip. and jv01, show pics of that. the biggest ive seen fit without issues on a 7.5" wide rim is only a 245. try going with a nitto nt555, or the drag radial, nt555r.

nt555: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHZ4

nt555r: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHV4
Wow, how insightful...

My point was, if this is a street driven car (hence I made a distinction between a car that sees the track and one used solely on the street), what the hell does it matter if you can .91 g's worth of grip or .90???

Gotta get through the neighborhood hairpin at 51 mph instead of 49???

You gonna get to the 7-11 two tenths of a second faster???

There is absolutely no reason to give up the acceleration, braking, and steering feel associated with running a tire that wide for a street car. Again, you can't use the grip anyway...its just as fun, if not more driving hard on a little narrower tire.

Did you even read my post???
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Old 10-18-2007, 11:12 AM   #13
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the taller sidewall wont make much of a difference, as this tire's sidewall is quite stiff. and no the treadwear rating isnt 100, its more like 220, but its über sticky.
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Old 10-18-2007, 11:17 AM   #14
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Quote:
Originally Posted by th3loadr View Post
i disagree with rex8. the wider the better. wider=more grip. and jv01, show pics of that. the biggest ive seen fit without issues on a 7.5" wide rim is only a 245. try going with a nitto nt555, or the drag radial, nt555r.

nt555: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHZ4

nt555r: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHV4
Quote:
Originally Posted by th3loadr View Post
the taller sidewall wont make much of a difference, as this tire's sidewall is quite stiff. and no the treadwear rating isnt 100, its more like 220, but its über sticky.


oh emm geee


op.
I used a 245/40-17... but its pretty much the STU spec tire.
what will you be doing with the car?? just Daily driver status??
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Old 10-18-2007, 11:59 AM   #15
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yea, if he's doing dd, the 555 would be better. if he has the monies to blow, id use the dr's.
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Old 10-18-2007, 12:14 PM   #16
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dude.. you are nuts..
there are far far better tires out there than the 555.. especially if he is JUST daily driving.

effing nitto fanbois;

regards,.
hankook/bridgestone fanboi
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Old 10-18-2007, 12:45 PM   #17
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Quote:
Originally Posted by 0000-09-0233 View Post
dude.. you are nuts..
there are far far better tires out there than the 555.. especially if he is JUST daily driving.

effing nitto fanbois;

regards,.
hankook/bridgestone fanboi
But Nitto advertises on the back cover of Super Street - Its got to be the best!
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Old 10-18-2007, 03:02 PM   #18
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Thanks for all the help guys. I opted for a stock sized replacment. 225/45/17. I plan on getting 18's in the future, so I'll deal with larger sized tires then.


Thanks again!

DJ
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Old 10-18-2007, 03:30 PM   #19
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hankook=crap. yea they're nice for hondas, b/c hondas are slow, and we all want hondas to wreck. other then that, they arent good for anything. bfg's are decent, but i just like the stiffer sidewall of the nitto.
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Old 10-18-2007, 04:04 PM   #20
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Quote:
Originally Posted by th3loadr View Post
hankook=crap. yea they're nice for hondas, b/c hondas are slow, and we all want hondas to wreck. other then that, they arent good for anything. bfg's are decent, but i just like the stiffer sidewall of the nitto.
What dis boy talkin about?

You have added no value to this tread!
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Old 10-18-2007, 04:43 PM   #21
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Old 10-18-2007, 04:54 PM   #22
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Originally Posted by bdi View Post
What dis boy talkin about?

You have added no value to this tread!
lol every single one of his posts has been wrong, AND he drives a mustang.
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Old 10-18-2007, 07:48 PM   #23
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Default 04 sti a stock autocross run 275 v710

Quote:
Originally Posted by th3loadr View Post
i disagree with rex8. the wider the better. wider=more grip. and jv01, show pics of that. the biggest ive seen fit without issues on a 7.5" wide rim is only a 245. try going with a nitto nt555, or the drag radial, nt555r.

nt555: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHZ4

nt555r: http://www.discounttire.com/dtcs/fin...r=45&tc=NITHV4
also pontiac soltice run 285 hoosiers on 8" wheels
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Old 10-18-2007, 07:55 PM   #24
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I still dont know the answer to the original question, and seeing that the original poster ended up going with stock sized tires I'm sure he never got the answer he was looking for either.....are there any people out there that actually know the answer? If yes, then show me a pic of your STI (with no shock/strut/spring mods) with the wider tires on it...and let me know your opinion of how they handle. Dreamers, fantasizers and subaru theologeans please refrain from cluttering the simple answer. Thanks.
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Old 10-18-2007, 08:06 PM   #25
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Default 275 tires

Quote:
Originally Posted by plexiform View Post
I still dont know the answer to the original question, and seeing that the original poster ended up going with stock sized tires I'm sure he never got the answer he was looking for either.....are there any people out there that actually know the answer? If yes, then show me a pic of your STI (with no shock/strut/spring mods) with the wider tires on it...and let me know your opinion of how they handle. Dreamers, fantasizers and subaru theologeans please refrain from cluttering the simple answer. Thanks.

Originally Posted by EESTI
I currently have an 06 sti, and I was planning on using them with stock wheels.... My primary purpose for the wide tires would be track and autocross days.

275s on 8" wheels are fine for autox, but completely inappropriate for track use.

That said, if you put them on stock wheels, you'll need a 5mm spacer. Given how short the stock studs are, I would not feel comfortable with that, though apparently some people do it. Or put in longer studs. But it would be easier to just get some 17x8s with a +48 offset. That works fine with 275's on stock struts/springs for AS autox. If you want to upgrade/drop your suspension and go to BSP you will have a lot more work to do.
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