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And off course if you put gear ratio 3.8 at 180mph, motor rpm is going be around 8000rpm like at 70mph. So gear ratio change on front motor is not i think so bed idea:D. Rimac croatian electic car company changes gears on rear wheels soo tesla its on you.:rolleyes: Equation: density of air x...

Actually I don't personally see that as a probelm since in most european countries there is more speed cameras then traffic signs and police chase cars that look like civilan, but when they stop then its fun. Probably prison and you life is ruined but off course except Germany. It is mecca for...

Sorka tank you,I honestly tough that if you put 4.2 gear ratio in front you would cut energy consumption in half from 400wh to 200wh per mile, and now i see that i am wrong. But at the end if somebody see this from Tesla, they should know that speed limits are different in Europe then in USA, so...

Ok but, middle of efficiency zone at typical US highway cruising speeds is not same as in europe. In europe 55mph is for trucks, 75mph is half of europe and 80mph is for other half on highways. So if gearing is snack on at 75mph then European cars should have different gear ratio then American...

But if we lock at this chart efficiency at 24mph and efficiency at 80mph is not just cuple of persents. Because in europe 80mph is highway speed limit in many countries, so range can be problem at that speed, then every percesnt is important. Hence not many people buys D model for acceleration...

You miht be right ,but car is most efficent at 24.2mph and that is around 2800rpm at motor shaft, so if you just cange gear ratio to 4.2, than at 55mph motor would run at 2800rpm.

I think that tesla is not using efficiently energy from battery packs, on D models if you have two motors and two transmissions then why not to use them at different speed separately and at peak efficiency. If tesla would use only rear motor to speed of 55mph at standard 9.87 gear ratio and...

wk057 if you put another motor in front and change gear ratio to 6.255 or less, then during highway speeds car would use same amount of energy like during 45mph, if we are only using front motor instead of rear during highway speeds and during slower you would use rear. I think that would make...