From the Horse's Mouth: The Tyre Choice Efficiency Difference

[SageBrush]

Trawling the EPA CSI website has its rewards. I found this nugget:

At 50 mph, road load is 11.13/9.95 = 11.86% higher with the 19 inch tyres compared to the 18 inch. I presume the 18" are tested with the Aero covers on. The energy/mile penalty will increase at higher speeds.

 

[SageBrush]

It is interesting to note that the 'C' coefficient for dyno testing increases by 5.031%

Just sayin'

 

[Pkmmte]

Nooooooooooooooo.com/

 

[T34ME]

Trawling the EPA CSI website has its rewards. I found this nugget:
At 50 mph, road load is 11.13/9.95 = 11.86% higher with the 19 inch tyres compared to the 18 inch. I presume the 18" are tested with the Aero covers on. The energy/mile penalty will increase at higher speeds.

Great info @SageBrush Where does it say "at 50 mph"? I also found this interesting tidbit:
The self‐discharge rate of the battery is likely to be less than 4% per month.

 

[BluestarE3]

Great info @SageBrush Where does it say "at 50 mph"?

In the chart above, the last line item for each of the tire size configurations.

 

[SageBrush]

@Zoomit ,
We now have an exact data point for you to use to validate your curves at 50 mph

148 Wh/mile for the 18"
166 Wh/mile for the 19"

 

[SageBrush]

By the way assorted geeks, nerds, etc, the full report is worth a read even if you have already pored over the CSI.

 

[Big Dog]

^^I'm still trying to understand what Road Load HP means.

 

[insaneoctane]

No disrespect intended, but I am pretty sure we had this report for months. I will see if I can find the thread(s)....

Found it
It's alive! [All spoiler, no speculation]