Hello all and hope everyone is well. This question is primarily for EQS owners of 2+ years. As the title says, I went for from a 80% charge = 330-340 miles to now 253-255 miles. I have been noticing this for the last month that the range has declined precipitously. I have had the car for 2 years and driving habits haven't changed. This time of year in NJ, temperature is also not a factor and the only change is a new set of tires (Bridgestone instead of Michelins) about a month back. What gives?

 

I wonder if car batteries needs to be "calibrated" from time to time like regular lithium ion batteries?

 

My 2022 450+ has not had this problem, I am still getting 350-370 miles per charge at 80% in the Summer, of course I get less in the Winter, but still more than you are reporting. I have 34K on the clock, charge between 40-80% usually, which means about every third day. I still have the OEM original tires which are Goodyear F1 Asymmetric 5's. Were the tires you bought rated for an EV, with the extra weight and all? That's all I can think of.

 

I can tell you that tires make a massive difference. You do not want the wrong tires. I lost about 20-25% of the range when I switched from Goodyear F1 Asymmetric 5 summer tires, to Pirelli P Zero All Season Run Flats.