21s and range

[steilkurve]

Curious, does changing tires from 19 to 21s affect how the car calculates rated range? Asking because I recently installed turbine 21s on my new P85D, about a month into ownership. At that point, I also started charging at 70% instead of 90. Ever since, I have seen a rated range reduction. So, would that be the 3% range loss from the 21s, the 70% debalancing the cells or just plain degradation? Latter would surprise me as 1600 miles on the car but... Any info appreciated. Thanks.

 

[jerjozwik]

did you add new tires with your new wheels? car is still kinda new to get a real ideal of range, i think the first p85ds had to get into 5,000 miles before range became consistent.

 

[tomanik]

My thought would be "70% debalancing the cells."

 

[steilkurve]

did you add new tires with your new wheels? car is still kinda new to get a real ideal of range, i think the first p85ds had to get into 5,000 miles before range became consistent.

Yep. Went from 19s with Tesla's standard tires to the 21s with ContiSports so sticky rubber summer tires.