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CandyMan
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Post subject: wheels wheels wheels Posted: Tue Jun 22, 2004 9:11 pm |
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Joined: Sun Jun 06, 2004 10:09 pm Posts: 701 Location: Nuremberg
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Hey,
can I do this to my Z?
Front: 18x8,5, 32mm offset
Rear: 18x9,5, 32mm offset
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CandyMan
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Post subject: Posted: Wed Jun 23, 2004 10:05 pm |
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Joined: Sun Jun 06, 2004 10:09 pm Posts: 701 Location: Nuremberg
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if i read this one, then i see no probs, whatcha thinkin?
Quote: In order to determine the correct "offset" you need to be talking about a particular wheel width.
Offset is the distance the face of the mounting hub is displaced from the centerline of the wheel. Positive offset moves the inner edge of the wheel closer to the body, and reduces the amount the wheel/tire sticks out of the fender.
Backspace is the distance from the hub face to the extreme back outer edge of the rim and is equal to:
rim width/2 + offset + bead flange thickness.
The stock 16x8 wheels have a 55mm offset. That means that they have roughly a 6.65" backspace. If you take the "backspace" away from the total wheel width (nominal width + 2 flanges) you get "frontspace", or the amount the wheel sticks out from the face of the hub.
Stock: 16x8, 55mm offset, 6.62 backspace, 2.28 frontspace
WS6/SS: 17x9, 55mm offset, 7.12 backspace, 2.78 frontspace
I've run 9.5" wheels in the front, and the smallest offset I have run is 49mm. That made the backspace 7.14" and the frontspace 3.28". That put the outer edge of the wheel/tire just about where I wanted it. I believe the 17x9.5 Torque Thrust-II wheels for the F-Body have a 7.00" backspace and a 3.80 frontspace. To me, they are out a little toward the edge of the fender, but lets assume you could live with that.
In the rear, you can handle more "frontspace". My 17x11 50mm offset ZR1 replicas have a 7.93" backspace and a 4.00" frontspace. That is the max you can handle in the back.
Soooooooo....
For an 8" wide wheel - To keep a 3.80" frontspace, you need at least a 17mm offset. Any more than that, and you are outside the fenders.
For a 9" wide wheel - To keep a 3.80" frontspace, you need at least a 30mm offset.
For a 9.5" wide wheel - To keep a 3.80" frontspace, you need at least a 36mm offset.
All of this is APPROXIMATE, depending on the actual width of the flanges on the outer edge of the wheels that hold the tire beads on the rim.
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CandyMan
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Post subject: Posted: Fri Jun 25, 2004 2:17 pm |
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Joined: Sun Jun 06, 2004 10:09 pm Posts: 701 Location: Nuremberg
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BenZ28
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Post subject: Posted: Fri Jun 25, 2004 3:51 pm |
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Joined: Mon Sep 10, 2001 3:53 pm Posts: 2485 Location: Mainz, Germany
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You know that the bolt pattern of BMWs and F-Bodies isn't the same...?
Ben
_________________ 1999 Camaro Z28, black, T-Tops, M6
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CandyMan
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Post subject: Posted: Fri Jun 25, 2004 5:18 pm |
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Joined: Sun Jun 06, 2004 10:09 pm Posts: 701 Location: Nuremberg
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yup...but it's almost the same *g*
there are many camaros/birds driving around with bmw wheels. or would you advise me against using them?
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SRZ
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Post subject: Posted: Fri Jun 25, 2004 5:31 pm |
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Joined: Sun May 27, 2001 3:42 pm Posts: 3430 Location: FL
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I know several people that do it. No problems. Heard on alleged story of the wheel falling off though. I have the BMW spacers and I had to have the holes bored out bigger to get them to fit. They still don't fit because they're not big enough. BUT that's spacers. BMW's wheels will mount right up no problem. Definetly have a bigger selection to choose from w/ their rims that's for sure.
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BenZ28
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Post subject: Posted: Mon Jun 28, 2004 11:02 am |
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Joined: Mon Sep 10, 2001 3:53 pm Posts: 2485 Location: Mainz, Germany
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Well, I wouldn't do it. I'd be too scared that I COULD get problems with the wheels on the track. Of course I don't know how hard and where you drive your car...
Ben
_________________ 1999 Camaro Z28, black, T-Tops, M6
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JackZ28
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Post subject: Posted: Tue Jul 27, 2004 4:38 pm |
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Joined: Mon May 28, 2001 6:03 pm Posts: 8686 Location: Houston, TX
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CandyMan
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Post subject: Posted: Tue Jul 27, 2004 5:12 pm |
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Joined: Sun Jun 06, 2004 10:09 pm Posts: 701 Location: Nuremberg
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yeah man, but i thought they were too expensive considering the fact that they won't even fit 100% a camaro. but still, one wheel of those costs 900 EUR. whoever has them, has sure done a good deal...
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JackZ28
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Post subject: Posted: Thu Jul 29, 2004 5:51 am |
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Joined: Mon May 28, 2001 6:03 pm Posts: 8686 Location: Houston, TX
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CandyMan
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Post subject: Posted: Thu Jul 29, 2004 8:41 am |
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Joined: Sun Jun 06, 2004 10:09 pm Posts: 701 Location: Nuremberg
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if you like BMWs that yeah, hehe
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Garry
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Post subject: Posted: Thu Jul 29, 2004 12:06 pm |
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Joined: Sat May 26, 2001 9:59 pm Posts: 7823 Location: Bad Hersfeld, Germany
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BenZ28 wrote: Well, I wouldn't do it. I'd be too scared that I COULD get problems with the wheels on the track. Of course I don't know how hard and where you drive your car...
Well, from the wheel quality itself I don't think it would be a problem - if it's usable for an E46, it should take the speeds and torque of a Z ... so the question would be whether the spacer/adapter can take it ...
_________________ Garry Glendown * '99 Firehawk Convertible
"Horsepower is how fast you hit the wall and torque is how far you take the wall with you." "Speed doesn't kill - suddenly becoming stationary on the other hand ..."
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JackZ28
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Post subject: Posted: Wed Aug 04, 2004 12:45 pm |
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Joined: Mon May 28, 2001 6:03 pm Posts: 8686 Location: Houston, TX
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It would be fine. I had steel BMW 3 series wheels on my car with only minor spacing problems in the front. If I would have put my 1/4" spacers on, I would have had no problems. The rears were fine.
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SRZ
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Post subject: Posted: Wed Aug 04, 2004 1:33 pm |
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Joined: Sun May 27, 2001 3:42 pm Posts: 3430 Location: FL
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So what wheels are you getting or have?
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JackZ28
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Post subject: Posted: Wed Aug 04, 2004 1:53 pm |
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Joined: Mon May 28, 2001 6:03 pm Posts: 8686 Location: Houston, TX
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SRZ
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Post subject: Posted: Wed Aug 04, 2004 2:22 pm |
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Joined: Sun May 27, 2001 3:42 pm Posts: 3430 Location: FL
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That lucky dog. What's he waiting on?! Slap them buggers on!
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CandyMan
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Post subject: Posted: Wed Aug 04, 2004 2:25 pm |
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Joined: Sun Jun 06, 2004 10:09 pm Posts: 701 Location: Nuremberg
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SRZ
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Post subject: Posted: Wed Aug 04, 2004 2:29 pm |
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Joined: Sun May 27, 2001 3:42 pm Posts: 3430 Location: FL
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Dude excellent choice! Don't sell those wheels no matter what. Classics and discontinued and very hard to find. Makes me want to pwd coat mine back to their orginal color. No I don't have those but I have the LG version exact rim minus the stud and forged instead of 3 piece.
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JackZ28
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Post subject: Posted: Wed Aug 04, 2004 2:32 pm |
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Joined: Mon May 28, 2001 6:03 pm Posts: 8686 Location: Houston, TX
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CandyMan
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Post subject: Posted: Wed Aug 04, 2004 2:34 pm |
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Joined: Sun Jun 06, 2004 10:09 pm Posts: 701 Location: Nuremberg
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cool, the LGs are pretty nice and I thought about buying them coz I couln't find the Enkei Win anywhere. But then I found this pic http://www.mirons.de/bad_ass_red_z3.jpg and saw Rob's selling his so it was like destiny
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