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Are the OEM wheels cast or forged?

Discussion in 'Model S: Ordering, Production, Delivery' started by mgboyes, Nov 19, 2015.

  1. mgboyes

    mgboyes Member

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    Perhaps I am just useless at searching but I couldn't find any existing thread on this.

    Does anyone know, authoritatively, whether the OEM wheels Tesla supply for the Model S (standard wheels, 19" cyclones, 21" turbines) are cast or forged?

    Lots of people seem to assume that they're forged (mostly because they're priced high enough that they should be) but then TSportline sell forged replacement wheels that are 20% lighter and also 20% more expensive, which casts doubt on that.

    Does anyone know, and if so can they reveal their source?
     
  2. ToddRLockwood

    ToddRLockwood Active Member

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    I'm fairly certain that they are cast, not forged. If they were forged, I believe Tesla would be mentioning that fact in the specs.
     
  3. ChadFeldheimer

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    Forged or cast, it is common for OEM wheel designs to be quite robust in order to withstand harsh road conditions. Aftermarket manufacturers will push the envelope a bit more. Unfortunately, robustness comes at the expense of weight. Bottom line: I wouldn't take weight to be an indication that they're cast.

    The base 19" wheels aren't priced that high. For example, you can buy a 19" winter tire setup for $2500. This is pretty reasonable for an OEM (any OEM) 19" wheel! The 21" wheels, however, definitely command a forged-worthy price premium.

    I'm sure the base 19" wheels are cast. I'd be quite surprised if the others were forged. This is not authoritative.
     
  4. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    Having lifted a couple of types of OE wheels, they have to be cast. I was surprised at how heavy they were.
     
  5. benf

    benf Member

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    The 19" and 21" OEM wheels are both cast, confirmed by a Tesla tech on the main Tesla forums.
     
  6. Zybane

    Zybane Member

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    Hardly any auto manufacturer uses Forged wheels. Of course forged are far superior, they are much more costly. Considering the 21" wheels are a $4,500 option and most 21" cast wheels cost $200-$300 each, you can see the large profit in them.
     
  7. FlatSix911

    FlatSix911 918 Hybrid

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    A few auto makers offer OEM forged wheels ... BMW, Porsche and Audi to name a few.
    Since the bolt pattern is the same for Tesla and BMW, I picked up a set of M6 forged wheels.
    They are much lighter and stronger than stock, with a more aggressive offset and rim width.

    IMG_3882.JPG IMG_3883.JPG
     
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  8. Zybane

    Zybane Member

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    Only on some of their models. What is ironic though is that even some other auto makers use forged wheels, they charge less than the silly $4,500 price Tesla does for cast wheels! For me it was a no-brainer to go with the standard 19" wheels and get a nice set of aftermarket forged 21".
     
  9. FlatSix911

    FlatSix911 918 Hybrid

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    I Agree completely. I was able to purchase a complete set of pre-owned BMW Forged wheels for less than the price of 1 new Tesla wheel.
    Plus I like the staggered width and the deep concave look of the wheels on the car. The weight savings is also a bonus ... 10lbs per corner.
     
  10. ToddRLockwood

    ToddRLockwood Active Member

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    I believe that wheel design is more limited with a forged wheel. I'm not sure that Tesla's turbine wheels could be produced as a forged wheel.
     
  11. Zybane

    Zybane Member

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    It's quite the opposite actually. You should see what you can come up with a forged wheel. The Tesla cast wheel is quite simple.
     
  12. FlatSix911

    FlatSix911 918 Hybrid

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    Just as a point of reference for the OEM wheels on the Model S:

    19" Wheels: 13.74kg ~30.2 lbs each
    21" Wheels: 16.02kg ~35.2 lbs each

    A bit on the heavy side ... forged wheels can save 10 lbs per corner.
     
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  13. Zybane

    Zybane Member

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    Yes, the Vossen 21" forged wheels I went with are 25 lbs!
     

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