TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

anyone thinking about running 21 inch model s rims on the model x

Discussion in 'Model X: Driving Dynamics' started by tcrcnsx, Mar 2, 2016.

  1. tcrcnsx

    tcrcnsx Member

    Joined:
    Apr 3, 2015
    Messages:
    19
    Location:
    san diego
    model s

    Front: 245/35-21
    Rear: 265/35-21



    I was thinking maybe go with 255 40 21
    275 40 21 instead



    model x
    The 22" tires are 265/35R22 front and 285/35R22 rear. Rim widths are 9" front and 10" rear.
    The 20" tires are 265/45R20 front and 275/45R20 rear. Rim widths are 9" front and 9.5" rear.
     
  2. ABCCBA

    ABCCBA Member

    Joined:
    Dec 20, 2015
    Messages:
    390
    Location:
    Somewhere
    You may want to visit this site and check out the tire circumference of the various options you suggest. Tire Size Calculator
    Your mileage and speed may be off depending on what aftermarket size wheel/tire set you choose.

    I ran the four front wheel/tire sizes that you mentioned, for ease of comparison.

    wheelSizeDifference.jpg
     
  3. Xmama

    Xmama Member

    Joined:
    Jan 9, 2016
    Messages:
    37
    Location:
    Salt Lake City, ut
    So, I have been told two different, but interesting things. First is that you can enter your new tire size into the screen and it will adjust as needed. Second is that instead of entering it in, the car will automatically recognize a new tire size. The first came from my DS and the latter from a tesla sales guy. Does anyone know if either is true?
     
  4. Zeus

    Zeus New Member

    Joined:
    Mar 7, 2016
    Messages:
    3
    Location:
    San Diego
    Keep in mind that towing capacity will be reduced.

    Who are we kidding...who's using the Model X to tow? :p
     
  5. Aljohn

    Aljohn Member

    Joined:
    Oct 17, 2014
    Messages:
    548
    Location:
    Georgia
    Typically 20" and 22" tires are more prevalent and therefore cheaper to replace than 21" tire. I don't understand a big advantage of moving from 20 to 21's or 22's to 21. What is the rationale?
     
  6. rayng

    rayng Member

    Joined:
    Nov 21, 2013
    Messages:
    32
    Location:
    socal
    tesla service techs strongly recommend against installing the 21s. why? the circumference difference is too big (5.6%) over 20" oem. i bought a set for the x but may need to either install them on the s or sell.
     
  7. napabill

    napabill Active Member

    Joined:
    Apr 30, 2009
    Messages:
    1,324
    Location:
    Napa, California, United States
    A question I asked elsewhere but never got a response. Can a 19" wheel from an S be used as an emergency spare on an X with 20" wheels? Doing an extended roadtrip in an X with a buddy who will be driving a S with a 19" spare.
     
  8. Redmiata98

    Redmiata98 Member

    Joined:
    Oct 12, 2014
    Messages:
    130
    Location:
    Northern Virginia, USA
    245/35/21- Pirelli Sottozero 3 winter tires from the S
    265/45/20 - Conti all weather on the X

    @rayng,
    I have the first from my S and the second are on my X. If you have similar and specs from Mikejr are correct, the circumfrence is actually smaller on the 21s. Maybe I am reading the specs wrong?
    Not an expert in tires so help me understand why you said the circumfrence is 5.6% greater on the 21s?
     
  9. BIGDJE

    BIGDJE Member

    Joined:
    Jan 22, 2014
    Messages:
    32
    Location:
    Newport Coast
    elon was running 21s on his black x but I remember tire size was really wide set up like 285 front 325 rear
     
  10. yearofthedragon

    Joined:
    May 2, 2013
    Messages:
    108
    Location:
    Los Angeles, CA
    Would check load rating of a 21" turbine.

    The load rating of a 22"
    turbine is 880kg (engraved on inner barrel of wheel).
     

Share This Page