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Old 11-20-2004, 03:26 PM   #1
NewShockerGuy
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Arrow ONE more thread about wheels that I ordered... wrong offset?

Ok I am really getting confused about this now. On my 05' STI on the actual wheel it says "53" I take it that is the actual offset.

I read the above sticky on offset and it coralates with the width of the tire..

I just order Rota Boost that are 17x8" for wheels, and on my invoice it states 48.

I am guess that is the offset. I am lost now because I thought I needed a 53 offset for a wheel? Does this mean that 48 will not fit the car? The bolt patterns match up on the invoice to all the info that I have been reading on the forums but this is killin me....lol

Sorry for all the wheel/tire threads, this is just confusing me.

Thanks :-)

-Nigel
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Old 11-20-2004, 04:26 PM   #2
mav1c
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They'll fit fine. You'll get a little wider track with the +48mm offset, but nothing to worry about. What are these wheels for?
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Old 11-20-2004, 04:35 PM   #3
NewShockerGuy
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Quote:
Originally Posted by mav1c
They'll fit fine. You'll get a little wider track with the +48mm offset, but nothing to worry about. What are these wheels for?

What do you mean a wider track? More space between the brembo's and wheels?

They are my winter wheel/ (still missing tire) combo..lol

-Nigel
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Old 11-20-2004, 05:30 PM   #4
SolbergWRCfan
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Normal Track | |-----------| |

Rota Boosts | |----------------| |

Glossary:

| | : Tires
------ : Track

Jon

PS: Exaggerated for effect
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Old 11-20-2004, 05:49 PM   #5
nhluhr
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nice ascii diagram

along with the wrong offset wheels, you'll have some positive scrub radius which means there'll be more toe-out under braking and at speed and also the steering will have higher effort. However, the 48 offset wheels change these things VERY LITTLE... such a small difference that it almost doesn't even matter. You'll be fine with 48 offset wheels.
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Old 11-20-2004, 06:56 PM   #6
moss
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People run offsets as low at +40 and WRXs and probably STis, +48 is very common offset to find for aftermarket wheels for Subaru
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Old 11-20-2004, 07:34 PM   #7
Jon Bogert
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48mm offset on an 8" wheel keeps the inside of the rim (and tire) about the same distance from the strut as stock. That's not such a bad thing.

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Old 11-20-2004, 08:09 PM   #8
moss
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Damn... want to do one of those for the GC?
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Old 11-20-2004, 10:08 PM   #9
NewShockerGuy
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Quote:
Originally Posted by Jon Bogert
48mm offset on an 8" wheel keeps the inside of the rim (and tire) about the same distance from the strut as stock. That's not such a bad thing.


I'm a little lost looking at that... How come 53mm for the 8" sti isn't on there?

Looking at it though sort of makes sense..

I won't have rubbing issues since the tire will be sticking out even further than the stock setup right?

Thanks again,
-Nigel
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Old 11-20-2004, 10:46 PM   #10
Jon Bogert
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Quote:
How come 53mm for the 8" sti isn't on there?
Because it didn't exist at the time. That 8" stock wheel must get awfully close to the strut. I wonder if it would rub the strut if you put 245s in it and maxed out the negative camber with crash bolts?
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Old 11-20-2004, 11:56 PM   #11
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YES...please do one for the GC

right now I have 17x7.5 ET48 with 215 tires...I do like to go for P1 or STI BBS (ET53) with 225/45/17 down the line

Quote:
Originally Posted by moss
Damn... want to do one of those for the GC?
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Old 11-21-2004, 02:02 AM   #12
RRRush
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Quote:
Originally Posted by Jon Bogert
48mm offset on an 8" wheel keeps the inside of the rim (and tire) about the same distance from the strut as stock. That's not such a bad thing.

Really well put. I worked the numbers also, do you think the ET48 7.5 or ET48 8's would have any noticable effect on stress. The 8's set in the same(very close to stock between rim and strut) as the stock ET53 7.5 but hang over the outside stock dimensions, where as the ET48 7.5 provide a larger gap in between the rim and strut with almost the same outside hang over as the ET48 8's. Anything noticeable, which is best with keeping a 225/45R17 tire?
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Old 11-21-2004, 11:34 PM   #13
NewShockerGuy
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Quote:
Originally Posted by Jon Bogert
Because it didn't exist at the time. That 8" stock wheel must get awfully close to the strut. I wonder if it would rub the strut if you put 245s in it and maxed out the negative camber with crash bolts?

Your talking greek to me..lol

What are crash bolts?

So the stock wheels on an 05' STI are too close to the strut?

Thanks,
-Nigel
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Old 11-22-2004, 12:35 AM   #14
ommmjido
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Quote:
Originally Posted by Jon Bogert
48mm offset on an 8" wheel keeps the inside of the rim (and tire) about the same distance from the strut as stock. That's not such a bad thing.

that is very nice and useful!
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Old 11-22-2004, 06:54 PM   #15
Grintch
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Yes add a few more sizes (8.5w +48) and it would make a good sticky.
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Old 11-22-2004, 07:03 PM   #16
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Quote:
Originally Posted by Grintch
Yes add a few more sizes (8.5w +48) and it would make a good sticky.
7.0" 48mm offset please!
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