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Mikey Thompson Radials

Discussion in 'Model S: Driving Dynamics' started by Brightonuk, Dec 9, 2015.

  1. Brightonuk

    Brightonuk Member

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    #1 Brightonuk, Dec 9, 2015
    Last edited: Dec 9, 2015
    I like the MT Street Comps but need some input on fitment (this gets complicated)

    I am running TSW staggered Nuremberg rims
    20.8.5 Front
    20 X 10.5 Rear
    I currently have Sport Comps 245/40/20 and 275/35/20

    The MTs have a 275/35 but only a 245/45

    The Sport Comps 245/40 are 25.72" tall where as the MT 245/45 are 26.68" tall, will they fit the front?

    If the front does fit MT has a 275/40 for the rear will these fit?
     
  2. PaulusdB

    PaulusdB Mayor Gnomus Vintage Limb

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    What you need is a good tyre claculator, B.

    I tend to use this one. There are several others, but this one is simple and efficient.

    http://www.kouki.co.uk/utilities/visual-tyre-size-calculator

    As far as I know you NEED 245/40-20 in front, as nothing else will fit. Except for 255/40-20 that may rub a little with some cars and not so much with other S'es.

    If the ET value of the rear wheels is low enough (< 35), you can go for 275/40-20 or 285/35-20. Given the 10.5" width of those rims, the 285's seem the best fitment.
     
  3. Brightonuk

    Brightonuk Member

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    So I have a .96" increase in tire height but not same width.... still not sure if this will work :confused:
     
  4. PaulusdB

    PaulusdB Mayor Gnomus Vintage Limb

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    :smile:
     
  5. 3mp_kwh

    3mp_kwh Member

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    If Micky Thompson's run wide, like Hoosiers, you'll be inviting some rubbing. Competition tires are running wider, at each width spec in my experience. Drag radials may be different.

    If you can find the MT revolutions per mile spec, that would be the best "go by" to tell how much you're flirting with stability control. Otherwise, I wouldn't want to go much more than 3% from the 245/40/20 diameter, front to back. That's because I don't think anyone knows how much you can mess with diameter differences, before Tesla's uber-aggressive TC system acts up.
     
  6. Brightonuk

    Brightonuk Member

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    Cheers Paul Point Taken
     

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