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Old 08-30-2005, 12:34 PM   #1
palpullero
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Default Advice: 235/45/17 or 245/45/17 on '05 STi

I am trying to decide if I either keep the same 225/45/17 size on my '05 STi or move up to 235/45/17 or even 245/45/17. Do you see any problems arising from the wider tires? I'm keeping the OEM BBS wheels.

D-Man
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Old 08-30-2005, 12:41 PM   #2
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Nope..you could even fit 255s
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Old 08-30-2005, 01:05 PM   #3
palpullero
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Quote:
Originally Posted by boxered
Nope..you could even fit 255s
Wow! 255s on an STi? Never thought it could....thanks.

D-Man
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Old 08-30-2005, 01:25 PM   #4
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255/40....not 255/45
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Old 08-30-2005, 01:54 PM   #5
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So, are 235/45/17 and 245/45/17 both o.k. in terms of rubbing and the speedo on an '05 STi?

-J
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Old 08-30-2005, 02:11 PM   #6
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245/45 is a pretty tall tire, I thinks. I thought most guys were going 235/40 instead of 235/45 too.
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Old 08-30-2005, 02:18 PM   #7
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Since you have 17x8 wheels, you could get away w/ 235/40 or 245/40.
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Old 08-30-2005, 02:37 PM   #8
palpullero
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Quote:
Originally Posted by waktasz
245/45 is a pretty tall tire, I thinks. I thought most guys were going 235/40 instead of 235/45 too.
OK, so let me get this right: can I fit 235/45/17, or I need to go down to 40 as in 235/40/17? I would like to keep the same profile (45), but just make the tire wider.

D-Man
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Old 08-30-2005, 02:51 PM   #9
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by going from a 225/45 to a 245/40 you would be keeping almost the exact same sidewall height which I think is what you are looking for. It's a ratio to the tire width not a straight measurement.
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Old 08-30-2005, 02:53 PM   #10
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....d00d...here it is ........the STi really should have a 235/45 from the factory....there has been some proof(GPS) that the speedo reads 'off' by just about exactly the difference between a 225/45 and a 235/45.....SOOOOOooooooooo.....the STi, with it's gearing and power can use a taller tire to achieve a bit 'better' bearing.....and just the opposite is true for a WRX....which can benefit(IMO) from a 'shorter tire"
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Old 08-30-2005, 03:14 PM   #11
palpullero
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Quote:
Originally Posted by Uncle Scotty
....d00d...here it is ........the STi really should have a 235/45 from the factory....there has been some proof(GPS) that the speedo reads 'off' by just about exactly the difference between a 225/45 and a 235/45.....SOOOOOooooooooo.....the STi, with it's gearing and power can use a taller tire to achieve a bit 'better' bearing.....and just the opposite is true for a WRX....which can benefit(IMO) from a 'shorter tire"
Thanks Scotty for the info. I feel I will get the 235/45/17 to be a bit taller but wider too. I also feel the STi should've come with 235 instead.

Live long and prosper...
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Old 08-30-2005, 03:26 PM   #12
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Quote:
Originally Posted by palpullero
Thanks Scotty for the info. I feel I will get the 235/45/17 to be a bit taller but wider too. I also feel the STi should've come with 235 instead.

Live long and prosper...
As near as I can tell the JDM STi came with 235/45/17, which makes me think that Subaru still had a pile of 225/45/17 tires to get rid of so they equipped them USDM.

Would a 245/40/17 fall in between the 225/45/17 and 235/45/17 ?

-J
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Old 08-30-2005, 03:32 PM   #13
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I run a 245/45-17 on my SSR comps (17x8.5 48 offset) and they do not rub. I ran the same tires on my factory '05 BBS wheels and they did not rub. The taller tire gives me a smoother ride and looks a ton better as it fills the wheel well up better.








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Old 08-30-2005, 03:58 PM   #14
Jitenshakun
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Would the 245/40/17 rub with pinks (1/2" drop) on an 05 STi?

-J
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Old 08-30-2005, 05:55 PM   #15
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Quote:
Originally Posted by Jitenshakun
Would the 245/40/17 rub with pinks (1/2" drop) on an 05 STi?

-J
I have pinks and my 245/45-17 has plenty of room. You can see it in th epics above.

-Paul
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Old 08-30-2005, 07:37 PM   #16
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Quote:
Originally Posted by Jitenshakun
Would the 245/40/17 rub with pinks (1/2" drop) on an 05 STi?

-J
Depends on the rims as well though. My friend has 255 40 17 Azenis 615's on Rota Torques and they rubbed the fender in th rear.
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Old 08-30-2005, 10:06 PM   #17
palpullero
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Quote:
Originally Posted by AtomicRacer
I have pinks and my 245/45-17 has plenty of room. You can see it in th epics above.

-Paul
Thanks Atomic for the info; makes me more confident to put down the money for 245s!
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Old 03-07-2006, 03:15 PM   #18
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Resurrecting this thread...

AtomicRacer, What tires are you running in 245/45-17? You wouldn't happen to have the specs? Width, diameter, etc? I am thinking of trying the Nitto NT-01's for track tires and I wanted 245/40-17, but they only come in 245/45-17.
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Old 03-07-2006, 05:02 PM   #19
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^^ To bother atomic racer even more...your 245/45s don't rub without any fender rolling?

edit: duh you have an 05 STI with the super fenders...don't mind me
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Old 03-08-2006, 07:22 AM   #20
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So is anyone else running 245/45-17 on an '05+ STI? Need to order tires soon and I want to make sure they'll fit.
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Old 03-08-2006, 01:19 PM   #21
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I have 245/45/17 on the OEM wheels on a 06 STI. No rub and I'm lowered on Cusco Zero 2 R's.
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Old 03-08-2006, 01:41 PM   #22
palpullero
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Question

Can anyone post close-up pics of 245/45/17 or even 245/40/18? Greatly appreciated if you can.
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Old 03-08-2006, 02:05 PM   #23
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Can anyone recommend a "certain brand" of tire @ the 245/45/17 ??

Thanks in advance for feedback....

STix66

Last edited by STix66; 03-09-2006 at 11:22 AM.
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