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Size of wheel spacers on staggered turbines?

Discussion in 'Model S: Interior & Exterior' started by Hbey5, Apr 17, 2017.

  1. Hbey5

    Hbey5 Member

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    Hi All,

    Just picked up my CPOd P85+ this past weekend and have been in awe of the vehicle. It's truly an 'experience' as one of the forum members stated.

    Being a big fan of a wheels and tires that are flush with quarter panels, I'd like to install a set of wheel spacers on my OEM staggered turbines (on my 2013 P85+). I've installed H&Rs before on a 07 BMW M6 and really enjoyed them, however, I don't think they're available for a MS. I've been reading some forum members using ADAPTEC (Wheel Adapters, Wheel Spacers, Hub Rings for your car! | Motorsport Tech) spacers.

    QUESTION - any recommendations on a product? size? leaning towards 20 MMs all around - or shall I go with a staggered set of spacers for the staggered wheels?

    Much appreciated.

    -HB
     
  2. artsci

    artsci Sponsor

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    I have wheel spacers front and rear as well as a staggered set up. The spacers are hub and wheel centric, 18mm front and 5mm rear (you don't want the same spacer size front and rear with a staggered set up unless your rear tires are the same spec as the front). Bought them from Motorsport Tech, a company I highly recommend for the quality of both product and customer service.
     
    • Informative x 2
  3. Hbey5

    Hbey5 Member

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    Thank you artsci. Appreciate the info. A few questions for you if I may: are your spacers aluminum or steel? If steel, any concerns about the additional weight on performance?
    I believe your wheels are not the OeMs 21 turbines...if not, What spacer sizes shall I go with?
     
  4. artsci

    artsci Sponsor

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    The spacers are aluminum. I've noticed no change in performance or in efficiency (some claim having the wheels line up with the fender edges creates more drag but my my Wh/mile have remained the same). I have 20" wheels but I'll switch back to 21" for the summer when the Arachnids are delivered. The offset for the 20"s is 30 and for the arachnids 40 and I already have the spacers for the latter. I calculate spacer size based on the offset and the tire section width, with the goal of making the outer edge of the tires flush with the fenders. For the arachinds and Pilot Super Sports the spacers need to be 10mm more, which accounts for their 10mm higher offset of the arachnids versus my current wheels.
     
    • Informative x 1
  5. Hbey5

    Hbey5 Member

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    You rock. Thank you.
     
  6. zanary

    zanary Member

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    Dumb question as this is all new to me. I'm running the 19" Slip Stream wheels on my MS P90DL. If I wanted to add spaces so that the Rims are nearly flush with the body, what size of spaces should I be ordering from Motorsport Tech?
     
  7. Hbey5

    Hbey5 Member

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    The following info was provided by another forum member on another post regarding wheel spacers. Based on this info - I'd suggest you try either 20MM (conservative) or 25MM (more aggressive and flush) on the 19s.

    19" split 5 spoke (standard wheels)
    8.0x19 et40 all around

    21" turbine set
    8.5x21 et40 all around, so call it the square 21" turbine

    21" turbine sport or P+ set (call then staggered)
    8.5x21 et 40 fronts
    9.0x21 et 40 rears


    The staggered 21" turbine set is the flushness equivalent of running the square 21" turbine set with 6 mm spacers on the rears. This is because the extra 1/2" of wheel width = extra 1/4" inside width and 1/4" outside width, and 1/4" = 6.35 mm).

    Taking that further...
    Square 21" turbine is the flushness equivalent of standard 19" 5 split spokes with 6mm spacers on all 4 corners.

    Staggered 21" turbine is the flushness equivalent of 5 split spoke 19" with 6mm spacers in the front and 13mm spacers in the rear (rounding) .
     

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