Killing time waiting for the final reveal (that's what I'm doing a lot of these days), I was reading through this sticky thread over in the Model S area: What should my ideal charge percentage be? If you read that thread, you come away with the clear impression that you should only charge your Tesla to 90% (or even lower) unless you are going on a range trip. A 100% charge is bad. So, then 90% of 215 mile range is 193 miles. Now the Model S generally has greater range, so maybe this is an easy thing to do on MS. But for a 215 mile M3, you would feel it more. Just wondering if the base battery pack M3 is really expected to charge to only 90% / 193 (or less) to preserve battery longevity? If so, kinda makes me want the 75 kWh battery more than I thought initially.... PS- For full disclosure and my perspective, I have a 110 mile round trip daily commute ~4 days / week. Range may be more of a concern to me than others.