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Staggered Bridgestone Ecopia Testing

Discussion in 'Tesla' started by bwilson4web, Jan 25, 2021.

  1. bwilson4web

    bwilson4web BMW i3 and Model 3

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    My 2019 Standard Range Plus Model 3 goals:
    • low rolling resistance tires - Bridgestone Ecopia
    • reduced profile drag - smaller tire cross section
    • lighter weight - reduce tire rolling drag from weight and improve range
    • staggered tires - slower turning rear wheels (aka., BMW i3-REx style tires)
    upload_2021-1-25_4-38-22.jpeg

    I ordered a pair of Bridgestone 225/55R18 only to discover they won't fit in the front wheel due to the king pin. But they fit fine in the rear and the Michelin 235/45R18 were put on the front. The car operated fine with no abnormal handling.

    So I ordered the 225/45R18 for the front with the 225/55R18 on the rear only to discover regeneration no longer works at speeds above 25 mph. Handling was fine but loss of regeneration makes the car impractical.

    I'm waiting on a pair of 235/45R18, 791 rev/mi., for the front which given testing earlier Michelin 235/45R18, 790 rev/mi., should work fine. This will allow test configurations with lower and faster tire rev/mi. Using GPS calibration, we'll find out which is most efficient.

    Bob Wilson
     
    #1 bwilson4web, Jan 25, 2021
  2. GasperG

    GasperG Senior Member

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    The car doesn't like that front tyres are spinnig 6.8% faster than the rear.
     
    #2 GasperG, Jan 25, 2021
    bwilson4web likes this.
  3. Mark57

    Mark57 2021 Tesla Model 3 LR AWD

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    Agreed, even though his is not a dual motor (front and back) I suspect the speed sensors are freaking the system out at speed from the rotation speed difference.
     
    #3 Mark57, Jan 25, 2021
  4. Mendel Leisk

    Mendel Leisk Senior Member

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    Ecopia what? There’s 3~4 tires with the name Ecopia, with different suffixes. To complicate matters further, the version with “422 plus” suffix comes from three countries, each distinct.

    And the Michelin MXM4, that’s a Primacy?

    Seems an expensive experiment.
     
    #4 Mendel Leisk, Jan 25, 2021
  5. Trollbait

    Trollbait It's a D&D thing

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    And this can have implications for braking, traction control, stability control, and whatever else is using those sensors' input.
     
    #5 Trollbait, Jan 25, 2021
    fuzzy1 and Mark57 like this.
  6. bwilson4web

    bwilson4web BMW i3 and Model 3

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    All tires ordered from Tire Rack. As for cost, it comes with curiosity. The savings come from long life.

    Bob Wilson
     
    #6 bwilson4web, Jan 25, 2021
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