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    Model S 85 new gear reduction ratio

    It should boil down to simple math: the new 155mph top speed posted means only one of two things: 1. Tesla kept the 9.73:1 reduction gear ratio. If they did this, it means they raised the max motor rpm. With 245/45/19 tires, the tires must spin at 1875 rpm on the road. Keeping the 9.73:1 gear...