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Old 05-25-2002, 11:18 PM   #1
etam
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Default what determine wheel offset? can I take vw wheels and rotors?

Hi all,

What determine wheel offset? Is that brake rotor (or the size/thickness of the rotor hub?)?

VW golf/jetta, Toyota Celica all have 5x100 lug pattern, can I take those wheels/rotors combo and put them on Subaru?

Ernest
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Old 05-26-2002, 12:28 AM   #2
ImprezaGuy
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Default uhm ok

Wheel offset is the measure of the distance from the centerline of the wheels width. I.E. if you have a +32 mm offset then your wheels will have their inner mounting face 32 millimeters fromt he centerline of the wheel TOWARDS the face of the wheel (the outside). Thus off set is very important for deternmining calipers clearnace and general wheel fit and assembly. WE have an unusually high offset of 48 (or 53) i think. This means that a wheel with a lesser offset will sit much further out from the body of car and cause issues with fender rub and such.
Andrew Ogden
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Old 05-27-2002, 12:00 PM   #3
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no other comments? I don't mind if you tell me that it is not a valid question at all... or stupid question or too smart a question for you (j/k)...
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Old 05-27-2002, 01:03 PM   #4
AllWheelDrift
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Since you did ask, it's a stupid question. Even assuming VW rotors would fit (which the probably wouldn't but I don't feel like going into details) it wouldn't help with offset.
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Old 05-27-2002, 01:10 PM   #5
etam
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don't just tell me that it is a stupid question (even though MAYBE it is).. tell me all the details and I will decide!
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Old 05-27-2002, 01:21 PM   #6
AllWheelDrift
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A picture would be worth 1000 words right now.

The short of it is, the thickness of the disc in the hub area (part that get sandwhiched between the hub and wheel) is proabably around 10mm. That means if you didn't put any front rotors on, you'd gain those 10mm and would run wheels with 38-43 mm offset to maintain stock gemometry. Of coures, then you'd have no front brakes.

If you really want me to, I can explain some of the reasons VW rotors probably wouldn't fit, but since they wouldn't help in the first place, I'd just be wasting my time.
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Old 05-27-2002, 01:35 PM   #7
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Yeah, that's about right.

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Quote:
Originally posted by etam
I don't mind if you tell me that it is not a valid question at all

Quote:
Originally posted by etam
don't just tell me that it is a stupid question (even though MAYBE it is).. tell me all the details and I will decide!

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Old 05-27-2002, 01:40 PM   #8
etam
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AllWheelDrift, now I got it! Thanks!

Necromancer, what's wrong with that?

What I am say it: Don't just say it is bad/stupid unless you have reason (now I got it) to support it.

Ernest
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Old 05-27-2002, 02:20 PM   #9
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etam - if you're talking about wheels alone, the VW stuff is lug-centric vs. Subaru's hub-centric design. The Toyota's IIRC are hub centric, however the CB is smaller than that of the Subarus, so you could drill it out. Just have to make sure you have the right offset, as your wheel well only has a certain amount of space.

If you were to swap rotors & hubs + wheels etc, all else being equal, you will alter the suspension geometry and the car won't drive like it's suppose to.
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Old 05-27-2002, 02:32 PM   #10
AllWheelDrift
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Default Way OT now, but FYI...

Neither Toyota nor VW wheels have enough offset... (IIRC ~35mm for VW and ~45mm for Toyota.)

VW wheels are also hubcentric, but probably have a larger centerbore than Subaru. All factory VW/Audi wheels I've seen use ball seat lugs rather than cone seat.
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