 Wheel Offset/Backspacing |
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| McMark |
 May 30 2006, 11:27 AM
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#1
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914 Freak!  Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None  |
I don't understand how a wheel with the same width and offset can have a different backspacing??? (IMG:style_emoticons/default/confused24.gif) I thought offset was (width - backspacing)/2.
7 x 16 23.3mm 112mm 911.362.115.00 7 x 16 23.3mm 138mm 951.362.115.00(944) |
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| Aaron Cox |
May 30 2006, 11:28 AM
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#2
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
shoot... i used to know the 951 wheel vs 911 7 wheel question
the 951 was different to fit big ol brakes.....had recessed lug holes too.... \ wierd. offset is centerline of wheel to mounting face. (can be + or -) backspacing is inner lip to mounting face |
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| Mueller |
May 30 2006, 11:33 AM
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#3
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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QUOTE(McMark @ May 30 2006, 10:27 AM)  I don't understand how a wheel with the same width and offset can have a different backspacing??? (IMG:style_emoticons/default/confused24.gif) I thought offset was (width - backspacing)/2. 7 x 16 23.3mm 112mm 911.362.115.00 7 x 16 23.3mm 138mm 951.362.115.00(944) the only way for the offset to be the same with a different backspace would be the thickness of the lip on the rim.....normal thickness is about 3/8" to 1/2"....I doubt the 944 rim has a 1.5" thick lip (IMG:style_emoticons/default/smile.gif) I think someone goofed............ |
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| McMark |
May 30 2006, 11:35 AM
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#4
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Anyone have some info about fuchs sizes? I need to know which 16 x7 fuchs are available. For a squareback project. The stock wheels are 5.5" wide and have 114 backspacing so a 13 mm offset. I need something similar or bigger (I don't mind spacers). I will be running 205/55/16 whitewalls on it.
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| Mueller |
May 30 2006, 11:37 AM
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#5
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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QUOTE(McMark @ May 30 2006, 10:35 AM) Exactly Aaron. If the offset is the same and the width is the same, the centerline is the same and so how can the backspacing be different? (IMG:style_emoticons/default/unsure.gif) read my reply....backspacing can be varied due to the thickness of the rim lip....you can have 2 7" wide rims, one could be an overall width of 7.5" (outside to outside) with the other one 8" wide....someone messed up, the 8" wide 951 rim should have that 138 backspace.... |
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| Aaron Cox |
May 30 2006, 11:58 AM
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#6
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
i have a fitment guide in my blog....
those are the only two 16" x 7 varieties... |
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