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Wheel Offset Calculation Verification

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Old 08-27-2008, 12:45 PM
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Wheel Offset Calculation Verification

Hey guys......I've got PIAAs 19x9 +25 / 19x10 +25

I wanted to mimic the wheel flushness with the fender like a 19x9.5+22 / 19x10.5+22 so I decided to make these calculations.

Can you verify that my calculations are right. I assumed that the 19x9.5/10.5 are in inches so I converted everything to mm because I know offsets are in mm.

My conclusions show that I need 10mm spacers all-around to get the same flushness as say a Volk LE-37 TA.

Can someone verify this for me? Thanks guys!!

Figure shown below:
<a href="http://picasaweb.google.com/ChristopherD.Lee/RandomStuff02/photo?authkey=UtO4Zfm2PVM#5239239424817119586"><im g src="http://lh3.ggpht.com/ChristopherD.Lee/SLWEf4lyQWI/AAAAAAAAAes/Fz2dW46d5G0/s800/wheel_offset.png" /></a>
 
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Old 08-27-2008, 12:51 PM
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10mm is correct(actually 9mm) Should look good. I've seen people run 15mm all around on the piaa's and rolled fender, better option IMO
 
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Old 08-27-2008, 12:58 PM
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right on....thanks for the verification red. appreciate it.

15mm all-around?

what spacers would you suggest? ichiba? H&R is it? kics?
 
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Old 08-27-2008, 01:00 PM
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do the piaa's have recessed areas on the backside of the wheel to accept the extra length of a bolt on spacer? I'm pretty sure they do. Or do you need spacers that use replacement extended studs? I would go with Eibach for bolt on, and either eibach or H&R for replaceable stud spacers
 
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