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Need help on BBS LM Offset

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Old Feb 27, 2026 | 07:19 PM
  #1  
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mc4one
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Default Need help on BBS LM Offset

Hi guys,

I'm looking for import wheel like BBS LM.

On the website of BBS I saw that the front is :
8.5x18 ET56
Rear :
11x18 ET56

Actually I have on my 4s Turbo Wheel
So : 8x18 ET50 / 11x18 ET45
I add 5mm spacer in front and 15mm spacer on rear.

The look is flush for me and I love that.

If I want the same on the new wheel, for the front 5mm spacer seems to be ok but for the rear...
It's not a good solution to put 26mm spacer...

I can ask for changing the ET of the new wheel. But what is acceptable ? Do it change something of the look of the wheel ? I love big lip like on the picture...
Where can I find a compromise without any mechanical constraints?

Thank you, Offset brake my brain

Image from google
Image from google
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Old Feb 27, 2026 | 08:12 PM
  #2  
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You can run the new 18 x 10.5 et36 fitment ..... has a slightly bigger lip than the 11 et56 too....they dont do custom offsets from BBS on the LM's

We can get you set up. Please email sales@supremepower.com for info/ordering
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Old Feb 27, 2026 | 08:13 PM
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SJ 997.2 C4S
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I checked with a local BBS distributor, Supreme Power, here in Los Angeles as I want a set of LM's for my C4S. Eric there, who I bought CH-R's from for my C63 back in 2011 said that BBS now has a 18x10.5 rear et36 that obviously doesn't require a spacer. He also said the 10.5 has a larger rear lip compared to the 18x11 et56 that would need a 15mm spacer. I would run the same 295 PS4S tire I have on my Turbo Twist OEM wheels.

Last edited by SJ 997.2 C4S; Feb 27, 2026 at 08:17 PM.
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Old Feb 28, 2026 | 06:51 AM
  #4  
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mc4one
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I can have the offset adjusted by the manufacturer

That's why I'm asking
In the photo I posted, do you think it's ET56 or ET36?
I can't quite tell what actually moves from one to the other. Does the entire center of the rim move back and forth, or is it just the hub, or perhaps the concavity?
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Old Feb 28, 2026 | 11:28 AM
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That C4S probably has the 18x11 or 19x11 based on the size of the wheel and is running a good size spacer.
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