We had something in common as it was 4F out this morning when I left - Just need a zero to be at your low temp... Heat is WORKING amazing now. and Regen is too. Tomorrow it should be in the double digits below zero or at least I will be driving to double digits below for the final test. With the wheel change in the computer if I charge up to 90% SOC - I have 268 miles and roughly 150-160 real world miles per Tezlab. I'm running 2021.4.6 software, which has a range increase DISPLAY with this update.
Is that about 313 miles at 100% SoC when your Performance Y was new? That's good, considering LR AWD has 326 miles...only 13 miles more.
I got my PUP last September when the range was 289. It's now showing around 308-313. Honestly, I set it to % and forget about it.
I have 6,300 mi on my PUP. I put 20s on immediately after purchase which gave me 316 mi rated range. With 3000mi on the odometer I put 19in winter tires on, I’m at 305 mi rated range (3% loss) now which is due to the battery degradation and cold weather.
This supports the idea that with same (255 mm squared tires) as LR AWD, a Performance Y is at about 316 rated miles (100% SoC) when new. I was actually looking for reasons to justify the $11K difference between getting LR vs P.