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Tyre pressure for 20" aftermarket wheels?

Discussion in 'Model S' started by TheDane, Dec 3, 2015.

  1. TheDane

    TheDane Member

    Joined:
    Mar 23, 2015
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    44
    Location:
    Denmark
    Hi guys,

    I have 19" stock rims now. I'm interested in some black 20" aftermarket wheels for summer.

    Does anyone know what tyre pressure I should be running with 245/40-20 tyres? Should I just go with whatever is printed on the side of the tyre, I mean, the tyre doesn't know which car it's mounted on, but maybe that doesn't matter....?

    Bonus question regarding TPMS: In settings, I believe one can select either 19" or 21", that setting has impact on the "low tyre pressure warning"-threshold, right? Does anyone know what the treshold is, for either 19" or 21"? Again, I would like to know which setting to use, when driving with 20".

    Thanks.
     
  2. benjiejr

    benjiejr Technogeekextraordinaire

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    Location:
    San Antonio, Texas
    I was told by Tesla to use what's stated in the door jamb - mine says 42 psi. Of course, that's the recommended psi and you can adjust depending on if you want more efficiency or better traction, etc. as long as you don't exceed the max psi stated on the tire. Also, Tesla told me to choose 21" on the TPMS setting. Honestly, I think you would be fine either way. I haven't received any tire pressure warnings and it registers just fine on the dash.
     
  3. TheDane

    TheDane Member

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    Mar 23, 2015
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    Location:
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    Thanks benjiejr. Are you rocking 20" wheels as well?

    According to people on the internet, 42 psi is Tesla default for 21" and 45psi is for 19". So with 20", I guess 43-44 psi will be acceptable.

    I wonder at what threshold the tyre warning system will trigger, for 19" and 21" setting.
     
  4. benjiejr

    benjiejr Technogeekextraordinaire

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    San Antonio, Texas
    Yes sir! HRE RS102Ms, staggered, 245 front, 285 rear

    HRE RS102M.jpg IMG_2717.JPG
     
  5. TheDane

    TheDane Member

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    Location:
    Denmark
    Looks awesome!!!

    My plan was to get Brock B32 in black, and put on my steel grey 85, should end up looking something like this:

    brock kbh billpeje.jpg
     
  6. benjiejr

    benjiejr Technogeekextraordinaire

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    That's gonna look great!!
     
  7. TheDane

    TheDane Member

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    I hope so :) I had/have some doubts whether or not black rims will fit the steel grey. But I think it does.
     
  8. Saleen09

    Saleen09 Member

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    Apr 10, 2015
    Messages:
    19
    Location:
    Seattle, WA
    I am looking at 20" aftermarket wheels as well, staggered.

    20x9 in the front, 35MM offset. What are you guys running in the rear for 10 inch wide wheels for offset?
     
  9. jlucero

    jlucero Member

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    i have 20 inch ADV1s and im targeting pressures of 45psi.
     
  10. LuckyLuke

    LuckyLuke Model S P85DL

    Joined:
    Dec 14, 2011
    Messages:
    2,092
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    Eindhoven, The Netherlands
    I always run 45psi (3.1bar) on my 20" Vossen set (225/40 front 285/35 rear)
    ImageUploadedByTapatalk1450000076.074318.jpg
     

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