PACEMD
Active Member
So here are my crude and imperfect numbers. The truth is in general I don't pay much attention to those on TMC who seem so sure of their complex analysis and detailed calculations. The more complex, wordy, they tend to be the less I trust the results. They always make fundamental unproven assumptions.
So........my experience is my 2019 M3, Stealth Performance, had a rated range when new of 310 miles. It now has 54K total miles. Most of those miles are at 80+ mph on the interstate highway. I charge twice a week to 100%, most of that done at 120v, a wall charger. For the first 20k+ miles, the rated range reading varied from 308-302. Around that time I got a Gen 3 Tesla wall charger for home and we got a Supercharger in the town where I work, 150 miles from home. I occasionally use the Supercharger.
After 20k miles the rated range slowly decreased to around 280 miles, a 10% change. I did try the methods discussed here in this post but not much changed. What did seem to affect those numbers in my situation was when I started charging at home with the Tesla wall charger at a different amp setting. Why not? At home, and for the last 20k+ miles, I mostly charge at 12 amp, rather than the max 48a wall charger wired on a 60 amp circuit. The car just sitting in the garage overnight charging slower is no inconvenience. If I need more power sooner I crank the amp up, if not I use 12 amp. The rated range is now reading 290-295.
The truth, however, is I see no real difference in practical range. I average 1.5 miles rated range per mile traveled. That's with performance setting, mostly driving with NOA at 85 mph, not flat land, variable winds, temps from 110f to -20f, and taking no care at all to conserve power. I average 340 Wi/mi. That's not very efficient, and I don't care. With 100% charge, I arrive home/work, 150 miles, with 5%-30% charge remaining. Depending mostly on weather, temperature, and wind. At neg 20f in a blizzard, I do have to slow down.
So for me personally people can play with numbers all they want. The important thing is to know your numbers and what you need to do with those numbers to achieve your purpose. It's like the test resulting in numbers we do in emergency medicine. None of those numbers are absolutes and all are affected by a multitude of factors. The point is numbers are an attempt to make certain uncertain realities. But that's all it is, an attempt.
So........my experience is my 2019 M3, Stealth Performance, had a rated range when new of 310 miles. It now has 54K total miles. Most of those miles are at 80+ mph on the interstate highway. I charge twice a week to 100%, most of that done at 120v, a wall charger. For the first 20k+ miles, the rated range reading varied from 308-302. Around that time I got a Gen 3 Tesla wall charger for home and we got a Supercharger in the town where I work, 150 miles from home. I occasionally use the Supercharger.
After 20k miles the rated range slowly decreased to around 280 miles, a 10% change. I did try the methods discussed here in this post but not much changed. What did seem to affect those numbers in my situation was when I started charging at home with the Tesla wall charger at a different amp setting. Why not? At home, and for the last 20k+ miles, I mostly charge at 12 amp, rather than the max 48a wall charger wired on a 60 amp circuit. The car just sitting in the garage overnight charging slower is no inconvenience. If I need more power sooner I crank the amp up, if not I use 12 amp. The rated range is now reading 290-295.
The truth, however, is I see no real difference in practical range. I average 1.5 miles rated range per mile traveled. That's with performance setting, mostly driving with NOA at 85 mph, not flat land, variable winds, temps from 110f to -20f, and taking no care at all to conserve power. I average 340 Wi/mi. That's not very efficient, and I don't care. With 100% charge, I arrive home/work, 150 miles, with 5%-30% charge remaining. Depending mostly on weather, temperature, and wind. At neg 20f in a blizzard, I do have to slow down.
So for me personally people can play with numbers all they want. The important thing is to know your numbers and what you need to do with those numbers to achieve your purpose. It's like the test resulting in numbers we do in emergency medicine. None of those numbers are absolutes and all are affected by a multitude of factors. The point is numbers are an attempt to make certain uncertain realities. But that's all it is, an attempt.