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Is EPA range for 21" or 19" tires for 2016.5+ performance MS?

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In researching different MS versions, I've been unable to find whether the EPA rated range for MS versions are for 19" (assumed for non-performance) or 21". This is really just a question for the performance versions, e.g. a 2017 P100D. I know many are sold with 21's, but is the 315 mile range expected for 21's or only 19's? Or is it an average of the two?

Secondly, looking at a used MS with 21's, should I expect a 3-9% increase in range at 100% battery just by changing the tires to 19's? Or does the on-screen range value not take into account the tire size?