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Old 08-11-2005, 08:49 PM   #276
Godfather Inc 03
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i am thinking about getting sse professor sp-1 wheels but they only come in 8.0 with 49 offset or 8.5 with a 47 off set...what do you think?
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Old 08-23-2005, 03:47 AM   #277
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2005 wrx wagon. 18 x 7.5 et45 with yoko avs es 100, 225-40-18??????????????????????????????????????stock height, not planning on lowering

Last edited by subeesteve25; 08-23-2005 at 04:41 AM.
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Old 08-23-2005, 08:43 PM   #278
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Quote:
Originally Posted by Godfather Inc 03
i am thinking about getting sse professor sp-1 wheels but they only come in 8.0 with 49 offset or 8.5 with a 47 off set...what do you think?
Either will fit a WRX sedan - the latter size gives you tons of clearance for big brakes down the road
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Old 08-25-2005, 10:40 PM   #279
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I've been reading on 17x8.5 wheels and correct me if I'm wrong but the ideal offset is 48mm. What are the advantage or disadvantage of having a 52mm offset?
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Old 08-26-2005, 01:20 AM   #280
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there really is no such thing as ideal - there are offsets for a given wheel that work or don't work. Some wheels, due to the nature of their spoke design, pad height, etc necessitate a lower offset, and others, due to their spoke design, pad height, etc can get away with lower offsets.

It has been said that the lower offset wheels can potentially cause wheel bearing failure. My own personal view is that it does not - and this is purely anecdotal based on me having had friend/customers with pure stock wheels on RS's and WRX's (without suspension mods either) have to do wheel bearings.
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Old 08-31-2005, 02:12 PM   #281
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Question

I assume having a 17x8 35mm offset for STI is just gonna kill it down the road?

thanks,

GDA
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Old 08-31-2005, 08:14 PM   #282
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kill it? I would doubt it to be honest. The wheel bearing issue does not only strike those with aftermarket wheels - I have plenty of customer with relatively low mileage cars and stock wheels that had to replace them too...it's a wear item

now, handling wise, it will be very darty due to the offset
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Old 09-11-2005, 10:33 PM   #283
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Default 05 subaru legacy rim questions

I have a 99 2.5rs coupe and i have the 05 subaru legacy rims. They are 16 X 6.5-inch 5-spoke rims, and on them are 205/55/16 falkin ziex.This is the ? why are they cambered? Do i need a camber kit? Whats the deal?

if anyone can help me it would be much appreciated
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Old 09-30-2005, 07:49 AM   #284
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I wanna fit 17x8's on my car with 245/45R17's What offset would i need to makes this not rub?
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Old 09-30-2005, 09:19 AM   #285
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you are not going to get those on a GC8 without fender mods
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Old 09-30-2005, 07:22 PM   #286
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what do you mean by fender mods, what all would i have to do? flare them out?
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Old 10-03-2005, 11:42 AM   #287
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at the very least yes
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Old 10-04-2005, 02:48 AM   #288
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Whoof!!! What an informative read... I've just spent the last 5 hours reading MOST of the offset threads and I think I'm beginning to understand what the offset issue is all about. So this is what I think I know, please tell me if you think I'm understanding this because someone wants to sell me a set of wheels with a +38 offset (on 17X7 wheels that I will mount 225/45/17 tires on) and I'm thinking that would be a bad thing...

Offset is primarily about three variables, bearing loading, fenderwell clearence and suspension geometry. It's a trade-off between the three. I looked at the design of my front wheel bearings and they're a couple inches inside (offset) from the mounting plane of the wheel. So a +53 offset will put the center of the wheel/tire pretty close to the center of the bearings. With that established can I assume that this position will put the wheel/tire in the middle of the space between the springs and the outside fender well (I guess I can measure that)? If that's true then the width of the wheel/tire will determine any clearance issues. If the standard offset doesn't put the wheel/tire in the middle of the space, then you would have to adjust the offset to center it, is that correct? Can I also assume that having the wheel/tire centered over the bearing is the best position for the suspension geometry to function correctly? If that's true then you don't want to move that offset too far for that reason as well...

So I'm thinking it would follow that a +38 offset would put too much load on the outer bearing by moving the centerline of the wheel/tire too far out regardless of whether the tire would rub on the fender, and it might upset the suspension geometry too. Do I understand this correctly? I just want to be able to explain to this person why I think I need an offset closer to 50. Unless of course I'm AFU...
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Old 10-04-2005, 12:05 PM   #289
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STirocket - you got it, but keep in mind it is all relative to wheel width as well
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Old 10-04-2005, 12:48 PM   #290
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Quote:
Originally Posted by Z1 Performance
STirocket - you got it, but keep in mind it is all relative to wheel width as well
If my understanding is correct the only thing wheel width will affect is whether or not the wheel/tire will fit in the wheel well without rubbing. If a +53 offset puts my 8" BBS wheel in the centerline of the wheel bearings, then a +53 offset 4" wide wheel (with a corrispondingly smaller tire) will also put it in the centerline of the bearing. The wheel/tire might not be centered in the wheel well anymore, but as far as bearing loading goes it would still be in the centerline of the wheel bearings.

I can see that people might WANT to put real wide wheels on a car that wasn't designed for them, and you would have to change the offset to make the wheel/tire fit in the wheelwell. But it is my thinking that the offset is dependant only on suspension geometry and bearing loading/wear.

Am I missing something?
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Old 10-04-2005, 05:56 PM   #291
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Question Simple question, multiple answers

Does anyone know for certain what the offset of the stock BBS wheels on the 2005 US STi is?
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Old 10-04-2005, 06:24 PM   #292
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Did you read the last few posts? ET53... The number (53) is cast into the wheel by the hub/bolt ring

Last edited by STirocket; 10-05-2005 at 02:06 AM.
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Old 11-27-2005, 06:05 PM   #293
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Quote:
Originally Posted by Z1 Performance
kill it? I would doubt it to be honest. The wheel bearing issue does not only strike those with aftermarket wheels - I have plenty of customer with relatively low mileage cars and stock wheels that had to replace them too...it's a wear item

now, handling wise, it will be very darty due to the offset
Does this mean spending one winter on 17x8's +35 with 225/45's isn't going to be the end of the world for me?
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Old 11-29-2005, 02:41 AM   #294
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so did u you end up running 18x8s or the 17s? I'm looking at a picking up a set of 18x8s 51mm offset and have not found anyone with this combo who can attest to them clearing the brembos and other wheel well harzards.


Quote:
Originally Posted by BOFslime
can you cite your sources?

I've had this question burning since i bought my car.. and i'm 2 day's away from ordering my wheels.

OZ Racing Superleggera are 17" x 7" with a +48 offset (part number SL770C48)

I haven't spoken with Tirerack.com yet to find out if infact this is the same offset that they provide for MY02/03 WRX Sedan. When I order I will have to see what they say.


edit/update:

Direct from www.ozracing.com under fitment guide; selecting subaru | 2002 | WRX:
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Old 11-30-2005, 04:02 AM   #295
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lol after going through this thread there is still no clear answer:

The 04 STi stock wheels, 7.5 ET53, don't follow the guidelines in the first post and the newer 05 STi wheels, 8 ET53, are even further away from the guide lines.

ah well

If you look at the STi wheels on the Gruppe-s site you see most are 53mm and a couple 50mm offsets:
http://www.gruppe-s.com/Sti/sti_sub.htm
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Old 12-02-2005, 02:32 PM   #296
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Motegi MR4's PART #=2147-8817 SIZE=18x8 OFFSET=+42 BACKSIDE=6 BOLT PATTERN=5x100 & 5x4.5 WEIGHT=28.5 lbs with Wanli S 1088 225/40/ZR18 tires, will these fit on a 2004 WRX with a stock suspension? I read this whole thread and I am still confused. I understand that Subaru designed the car to work with the stock rim, and I understand that if you change the rim size you need to change the offset to counter the damage to the vehicle. I think I read that with a 18X8 the offset needs to be 43 to 47. so will this wheel damage my car seeing how the rim is a 42?
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Old 12-02-2005, 03:01 PM   #297
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Quote:
Originally Posted by Silverex04
and I understand that if you change the rim size you need to change the offset to counter the damage to the vehicle
....this is wrong. "Ideally", you don't want to deviate from the stock offset regardless of wheel width. Obviously, with width comes clearance issues and sticking with oem offset may not be possible at some point. .......hence the suggested offsets at the beginning of this thread. Other factors can include wheel availability, lowering, aftermarket calipers, etc.

The wheel you're inquiring about is a 42 offset. I have a 40 offset and I can tell you that there's plenty of clearance "inboard" and very little "outboard" (toward the fender). Personally, I would suggest sticking with as high an offset as clearance will allow. ......that may be around 48 or so. I'm sure there are several members running 18x8's that you can check with or perhaps contact a vendor who is in tune with Subaru offsets/fitment so you know what will work best. You will also want to consider any future modifications you may be thinking about so you are sure the set-up you choose now will still work as you make changes down the road.
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Old 12-17-2005, 01:29 PM   #298
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I am looking at some OZ superleggas from the tirerack. They have 18X8 +51, and 18X8 +48. The +51 offset is $100 cheaper. Will these work, they are more than a couple of mm outside of your +43-+47 offset specs. Thanks
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Old 12-17-2005, 02:14 PM   #299
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Quote:
Originally Posted by Silverex04
Motegi MR4's PART #=2147-8817 SIZE=18x8 OFFSET=+42 BACKSIDE=6 BOLT PATTERN=5x100 & 5x4.5 WEIGHT=28.5 lbs with Wanli S 1088 225/40/ZR18 tires, will these fit on a 2004 WRX with a stock suspension? I read this whole thread and I am still confused. I understand that Subaru designed the car to work with the stock rim, and I understand that if you change the rim size you need to change the offset to counter the damage to the vehicle. I think I read that with a 18X8 the offset needs to be 43 to 47. so will this wheel damage my car seeing how the rim is a 42?
I'd be more worried about the 'damage' a big heavy wheel would do to our terrible power curve cars.
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Old 12-17-2005, 03:15 PM   #300
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Will 16x6.5 black steel wheels at 41 offset fit my05 WRX ? Thanks!
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