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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 05-14-2012, 01:26 AM   #1
RKiepper
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Sedan owners with 18" M3 Wheels!! What spacers do you use!!?

I finally got a hold of a full set of 18" M3 fronts for my sedan w/ coupe sport springs. They sit pretty flush with the front fenders on jacks, but I haven't put any tires on them yet (looking at some 225/40-18's) so I'm not certain exactly how they will measure up.

I already know that the stock M3 rears are too tall for the rear fenders, so I need a shorter tire to fit and to match the 16's and keep my speedo accurate. 225/40-18 is only 0.203" off. But, now that I have the height figured out, I need to get the spacing figured out.

I want these wheels to sit flush with the fenders without modification! So, this is a shout out to all the sedan owners that rock the M3 wheels. What spacers do you use to get the look?

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Old 05-14-2012, 02:47 AM   #2
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I have 20mm on the front .. coupe though

From my phone...
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Old 05-14-2012, 11:23 AM   #3
RKiepper
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Originally Posted by mxli330ci View Post
I have 20mm on the front .. coupe though

From my phone...
Are you running any spacers on the rears? Pics?

I might be able to do this through the wheel offset.

M3 fronts: +47mm
E46 42's: +46mm

Just measure where I want them, then add the difference?

Last edited by RKiepper; 05-14-2012 at 12:00 PM.
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Old 05-14-2012, 12:46 PM   #4
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I always recommend measuring the distance from the top of the tire to the fender to figure out the best spacer width.



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Old 05-14-2012, 03:38 PM   #5
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Ill post pics in a bit. Yeah and I measured the fender to wheel distance no spacers needed on the back for me

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Old 05-14-2012, 09:58 PM   #6
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Old 05-16-2012, 02:01 PM   #7
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I always recommend measuring the distance from the top of the tire to the fender to figure out the best spacer width.



I measured the gap and it was 1 inch (roughly 25mm). Is buying a 20mm spacer a good choice?

Thanks!
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Old 05-16-2012, 03:03 PM   #8
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A 20mm spacer could be a good choice in that it still gives you a bit of clearance or space.
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Old 05-16-2012, 03:38 PM   #9
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Rear = 1 7/16" - 36.51 mm
Front = 1 1/8" - 28.575 mm.
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Old 05-16-2012, 03:39 PM   #10
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Pics of my measurements.

What's a good amount to leave for clearance purposes? 10mm?
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Old 05-16-2012, 06:09 PM   #11
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Depending on how aggressive you want your stance you can get a spacer within those mm you just measured.
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