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10-24-2006, 09:17 PM | #1 |
Scooby Specialist
Member#: 10188
Join Date: Sep 2001
Location: Ottawa
Vehicle:2007 Forester XT |
Changing offset by milling - safe ?
I've wondered if this would safely work since I went from VW to Subaru. I had a mint set of Kosei wheels on my Jetta. Both the Subie and the Jetta are 5x100 but the offsets are different. Since the VW offset (38) sticks out further than the Subaru what I want to know is Could I have a metal shop mill the wheel to change the offset to a "Subaru-friendly" offset such as 48 ?
It sounds simple enough, remove enough material and you can correct the offset. However, will this work and would it be safe ?
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10-25-2006, 12:12 AM | #2 |
Scooby Guru
Member#: 39086
Join Date: Jun 2003
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2004 STi White |
Is there 10mm of thickness of extra material in the wheel flange?
How well can the machine shop index off the tyre bead to the hub face to keep things true? The first is an engineering judgment / wheel design issue. The second is just flat dam hard to do. For 4 rims. Better off to sell the VW wheels and buy some that fit your Subaru. |
10-25-2006, 12:17 AM | #3 |
Scooby Guru
Member#: 60082
Join Date: Apr 2004
Chapter/Region:
MWSOC
Location: Minnesota
Vehicle:2004 Forester STI Silver |
You funny. From an engineering standpoint, the RED FLAGS are waving. I'm curious how many wheel engineers would cringe at your statement. Um...DANGER, DANGER Will Robinson! I'm just saying...10mm is A LOT, getting close to half an inch. |
10-25-2006, 02:05 AM | #4 |
Scooby Guru
Member#: 39086
Join Date: Jun 2003
Chapter/Region:
NWIC
Location: Portland, OR
Vehicle:2004 STi White |
Doctor Smith:
"Go a head Will. It's cheap and easy..." Given automotive wheel design there might be 10mm in the flange... There is a reason that offset is critical. Both for wheels and hubs. Let alone king pin offset... |
10-25-2006, 09:58 AM | #5 |
Scooby Specialist
Member#: 13856
Join Date: Jan 2002
Location: Hayward Ca
Vehicle:04/5 STI white/WRB |
NO!!!!
When we machine the wheels, the PCD hole depth is dependent on the offset. When you remachine the mounting face 10mm, you will essentially lose the PCD hole depth and your nuts will nut reach minimum thread engagement. |
10-25-2006, 10:39 AM | #6 | |
Scooby Guru
Member#: 26638
Join Date: Oct 2002
Chapter/Region:
MAIC
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Quote:
Unless he is talking about milling away the road side of the wheel, which would not make any sense to do. Either way, it's unsafe to do. |
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10-25-2006, 08:18 PM | #7 |
Scooby Specialist
Member#: 10188
Join Date: Sep 2001
Location: Ottawa
Vehicle:2007 Forester XT |
Interesting comments guys , so Mr. Rota you're saying you drill the lug holes after the wheel is milled for offset ?
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