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The Tire Rack's Tire & Wheel Forum
Use this forum to discuss anything in relation to wheels to tires to offsets.
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Old 05-11-2010, 02:27 PM   #1
Fatal Flash
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Join Date: Dec 2006
Location: Long Island / PA
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My Ride: '12 RRS, '12 Evoque
Trying to sell Iforged non-m wheels to an M3 potential customer - Help with spacers?

I am trying to sell these 19" iforged classics which were agressive fit on my non-m e46 325 coupe.

A customer with an M3 wants to purchase these, and he was wondering what size spacer he should run, as iforged doesn't release offset sizes. Can anyone help?

thanks
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Old 05-11-2010, 02:37 PM   #2
Johnny FAME
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Measure the wheel backspacing and it'll give u a good idea of the offset, then u can calculate how big of a spacer the buyer would need depending on how aggressive he/she would want the fitment to be.
Determining the actual backspacing of a wheel is easy. Since it's the distance from the mounting surface to the edge of the inboard side of the wheel, it simply needs to be measured. With the wheel facedown, rest a ruler horizontally along both edges (beads) of the wheel. Now take a tape measure and measure the distance from the ruler to the mounting pad of the wheel. That figure is your backspacing.
Calculating a wheel's offset is even easier. Measure the wheel's overall width, subtract its backspace and divide by two.

Then to convert your inches result to mm, just multiply by 25.4.

VOILA!! You now have ur offset!!

Last edited by Johnny FAME; 05-11-2010 at 02:48 PM.
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Old 05-12-2010, 03:23 PM   #3
Fatal Flash
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i knew there was a calculation for this. Will do it tonight. TY!

<3 e46 fanatics ftmfw. exactly why i love this forum.
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Old 05-12-2010, 03:28 PM   #4
Johnny FAME
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NP! glad i could help!!
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