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As the motor was custom designed with the PEM, I think they are pushing it to the limit they designed it for. To wit, they hand wind the rotor in the Sport model to shave .2 seconds off the 0-60 time.well i wasn't thinking about servicing a Tesla, rather i'm interested inn seeing if they're using the motor to it's full potential.
Tesla has stated many times and many places the only difference between the standard and performance 85 is the drive inverter. The beefier inverter in the P allows for higher peak current delivery to the motor, resulting in more HP from the same motor.
In fact, all three varients of the Model S drive train - 65, 85, and P85 - use the same motor. The fact that each is rated for more HP is due to more current available at each step up, not due to any differences in the motor.
Tesla has stated many times and many places the only difference between the standard and performance 85 is the drive inverter. The beefier inverter in the P allows for higher peak current delivery to the motor, resulting in more HP from the same motor.
In fact, all three varients of the Model S drive train - 65, 85, and P85 - use the same motor. The fact that each is rated for more HP is due to more current available at each step up, not due to any differences in the motor.
I think at this point it is all software controlled anyway. Originally they were putting different inverters in cars. When a tech came out in January to do a proactive 12v battery replacement, he indicated that at some point they simply started using all the same inverters. I cannot remember how we got on the subject but that is what I was told. I'm sure they figured out it was more cost effective at some point.