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Old 01-03-2006, 06:07 PM   #26
Boxologist
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1. smaller wheels are lighter too. so it adds a 1/2 mpg to teh CAFE ratings when it brought it here.
2. it was the bare minimum budget-wise to clear the brakes.

the v4,5,6 wheels that teh RS came with were such a small addition to the manufacturing run compared to the usdm wrx wheels. 10,000 wheels compared to 500,000.
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Old 01-03-2006, 06:50 PM   #27
nhluhr
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all this talk of ET55 offset wheels.. what gives? WRX wheels have a 53mm offset, not 55. And guess what, so do the 17x7.5 and 17x8 wheels on 2004 and 2005+ STis. The offset is NOT RELATED TO WHEEL WIDTH. It is a function of hub width and how far you need to offset the wheel inwards to get a 0 scrub radius.

Quote:
Originally Posted by Portly
I addressed that in my prior post. 53-55 remains the IDEAL offset regardless of rim width. Problem is, it doesn't fit with wide wheels. So you reduce the offset. This does not make the reduced-offset ideal, it just is the compromise which you're forced into if you need to run wider wheels/tires.

_Jeff
I agree with you but I would say the point at which you start to need a lower offset is probably when you get to 8.5" wheels and at least 255 width tires.

255 width tires will fit FINE with stock offset wheels. I know because I've been doing it for the last 20,000 miles.

Last edited by nhluhr; 01-03-2006 at 06:55 PM.
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Old 01-03-2006, 07:15 PM   #28
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Quote:
Originally Posted by THAWA
I think the better question is, why did the 98-01 RS come with STi/WRX wheels?
98-01 RS's are a homiglation of various JDM and EDM parts
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Old 01-03-2006, 08:23 PM   #29
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Quote:
Originally Posted by nhluhr
all this talk of ET55 offset wheels.. what gives? WRX wheels have a 53mm offset, not 55. And guess what, so do the 17x7.5 and 17x8 wheels on 2004 and 2005+ STis. The offset is NOT RELATED TO WHEEL WIDTH. It is a function of hub width and how far you need to offset the wheel inwards to get a 0 scrub radius.

I agree with you but I would say the point at which you start to need a lower offset is probably when you get to 8.5" wheels and at least 255 width tires.

255 width tires will fit FINE with stock offset wheels. I know because I've been doing it for the last 20,000 miles.
Is it true that WRX wheels are all ET53?

At Allsubaru.com, which is selling new wheels, it says this:

17” FHI 5-Spoke Wheels

* What material are they made of? Aluminum alloy.
* What manufacturing process is used to produce them? They are pressure cast for more strength than cast wheels.
* What is their weight? 8.35 kg (18.4 lbs)
* What is their offset? 55 mm
* Why does Subaru use “this offset”? Since Subaru uses the horizontally opposed engine for its inherent low center of gravity the engine is wider and pushes the drive train components further away from the vehicle centerline therefore a large offset in the wheels is required for optimum performance.
* Will they work on other models? No, wheel/tire combination are designed specifically for the WRX and must be used with the performance suspension kit.
* What is the recommended tire? Bridgestone Potenza RE011 size 215/45R-17.

17" BBS Multi-Spoke Wheels

* What material are they made of? Aluminum Alloy.
* What process is done on them that make them better than the others? The wheel are specifically designed by BBS for Subaru.
* Are they Forged? Yes, they are forged
* What in their weight. 6.8 kg (15 lb)
* What is their offset? 55 mm
* Why does Subaru use "this" offset? Since Subaru uses the horizontally opposed engine for its inherent low center of gravity the engine is wider and pushes the drive train components further away from the vehicle centerline therefore a large offset in the wheels is required for optimum performance.
* Will they work on other models? No, wheel/tire combination are designed specifically for the WRX and must be used with the performance suspension kit.
* What is the recommended tire? Bridgestone Potenza RE011 size
215/45R-17.

Are they wrong?
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Old 01-03-2006, 08:34 PM   #30
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Those are not the stock wheels - it is quite possible that they are ET55. All the stock wheels I've ever seen (I've had a few sets myself) as well as ALL the ones I've handled have always been ET53, as clearly marked on the wheel.

If there are any ET55 wheels out there, they are rare.
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Old 01-03-2006, 09:06 PM   #31
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Stock 02-05 WRX wheels are ET55
17" Legacy GT wheels are ET55 too.

Are the 06+ WRX 17" wheels 55 or 53?
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Old 01-03-2006, 09:15 PM   #32
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Quote:
Originally Posted by dbrier
Stock 02-05 WRX wheels are ET55
17" Legacy GT wheels are ET55 too.

Are the 06+ WRX 17" wheels 55 or 53?
Most of my 02-04 stockers say ET53 on them...
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Old 01-03-2006, 09:39 PM   #33
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Quote:
Originally Posted by nhluhr
I agree with you but I would say the point at which you start to need a lower offset is probably when you get to 8.5" wheels and at least 255 width tires.

255 width tires will fit FINE with stock offset wheels. I know because I've been doing it for the last 20,000 miles.
No argument from me on that. I only brought it up to be fair - I didn't want to make a blanket statement like "You never need less than 55 (or 53 - whatever) offset wheels."

Also, NOTE! You are driving an STi - the newer WRX's and STi's have move clearance between the strut and the wheel. While you can run 255 width tires, I'm sure I would rub LONG before I got that wide. My 215-width Hankooks get really close to the strut in the back on my '97 wagon. (My wheels are 50mm offset - I'd prefer they were 53+, but that's the best I could get.)

_Jeff
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Old 01-04-2006, 08:07 AM   #34
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Quote:
Originally Posted by Kostamojen
98-01 RS's are a homiglation of various JDM and EDM parts

And an ugly one, at that!

The '00-'01 RS had a Ver.6 front bumper with a Ver.2 rear one (I think). Sedan had a Ver.1 (technically just "STi Version") spoiler, coupe a Ver.2. STi shift knob and a steering wheel that was, I think, exclusive to the RS. (Red stitches but not a Momo airbag cover...)

Reminds me of my old 1982 Chevy S-10, a compilation of about 15 different trucks, what with all the junkyard parts I had....

=S2=
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Old 01-04-2006, 08:29 AM   #35
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For you guys confused on how changing wheel width affects inbound & outbound clearance this is the site for you.

http://marksink.com/tire_wheel_offset/offset.html

Clears everything up (of course so would some math and common sense)
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Old 01-04-2006, 12:12 PM   #36
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This is from the Mike Shields very informative site...

"1) The US car was delivered with 16x6.5 rims that do not fit the the popular Subaru 4-pot brake caliper. You can rest assured that this was not an accident. The 16x6.5 wheels and those God awful 205-55/16 RE92 Bridgestone tires effectively de-tune the existing chassis. It is also true Prodrive and STI were stuck with several hundred sets of 17x7 wheels as the world wide 2002 WRX became available with 17x7 wheels from the factory. It also kept the list price down. But even the Japanese standard WRX got 16x7. Go figure, this is the single largest criticism of the car. Expect 17x7 standard or low cost option at some future date."

http://www.spdusa.com/hits_and_misses.htm
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Old 01-05-2006, 10:03 AM   #37
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I can tell you that I have seen, in person, a +55 '04 WRX wheel, and a +53 '05 WRX wheel. What I can't tell you is why.
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Old 01-05-2006, 10:33 AM   #38
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Quote:
Originally Posted by saggy
One of the problems with aftermarket rims is that they don't come in the ideal offset(ET+55) for Subarus. From what I've seen at TireRack the closest is SSRs with ET50--still not ideal. I know that Prodrive wheels come in the correct offset(the ones that are Subaru specific). And 2004 OEM BBS wheels for the STi are the correct offset. But you can only pull those off a STi or purchase them from a Subaru for $700+ dollars each, or you can get them for half price from a recycler or remanufacturer.
2004-2006 STI wheels will NOT fit a WRX. They have different bolt circles. The WRX is 5x100 and the STI is 5x112.5 or something like that. It is very hard to put STI wheels on a WRX.
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Old 01-05-2006, 11:45 AM   #39
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^^^ Correction, 2005-2006 won't fit the WRX. The bolt pattern on those are 5x114.3 (I think ). The 2004 STi wheels are 5x100, the same as the WRX.
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