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) 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
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.
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.
And this can have implications for braking, traction control, stability control, and whatever else is using those sensors' input.
All tires ordered from Tire Rack. As for cost, it comes with curiosity. The savings come from long life. Bob Wilson
