@skhenry81 - yes. tesla service recommended i cycle the battery by driving it down under 10% soc and charge to 100% soc, about once every month or two. since doing that it's leveled off to 253-254.
of note, i was charging to 60% daily and was told to charge to 80-90% by tesla. while people here will disagree with that recommendation to the death, i've only seen "positive" results. ;-)
The "down under 10%, back to 100%, down to 90%" does 2 things. It allows the battery management system to "see" the full capacity of the pack and better estimate range remaining. It also triggers a balancing cycle by charging into the CV phase (>93% SOC).
The first does nothing for your real range - it just allows the BMS to better estimate range remaining at a particular pack voltage. Big whoopie. Unless you're going for bragging rights ("I have 500,000 miles and only 2% degradation!"), or you frequently run right to the edge and need to count on the range indicator, that doesn't really matter.
The second (bringing the modules back into balance) can add real range. When charging and discharging, the car can't bring any module above/below its hard voltage limit. If the modules are out of balance, the highest limits how high you can charge, and the lowest limits how low you can go. If they diverge wildly, you'll have limited usable capacity. Charging over 93% brings the cells into "top balance" by bleeding off excess charge from the higher voltage modules to bring them all closer together.
There's nothing inherently "better" about 80-90% vs 60%. There will be a tiny (possibly immeasurable in real-word experience) increase in battery degradation at the higher SOC, but 90% still isn't enough to trigger balancing. It may reduce the amount of imbalance and improve the BMS range estimates, but who cares.
Even if Tesla officially recommends 90% every day, that doesn't mean it's "better." A lot of factors go into these kinds of product recommendations (BTDT) - you try to balance longevity, minimize warranty costs, and reduce support calls/headaches. Ultimately, you go with a recommendation that (you believe) will minimize these costs.
Tesla has gone mainstream. Many of today's buyers are not early tech adopters, car enthusiasts or EV enthusiasts. Some are looking at a Tesla as a "fashion statement" or to "keep up with the Jones's." These buyers don't want to hear long winded explanations about balancing, charge currents, blah, blah, blah. They're "transportation appliance" people who just want to go from point A to B easily/cheaply/cleanly and "plug and forget."
FWIW, I'll add I charge to 60-70% in the summer (I generally only use 25-30% a day) and 80-90% in the winter (more range for heating, plus degradation is reduced in cold weather). I routinely charge to 100% (or at least >95%) before a long road trip, especially if it means skipping a stop. Someday I'll get the tools to measure module voltage and see how balanced the pack is/isn't.