Your experience is most helpful, especially since I have the identical car. Since I posted this inquiry earlier. I found some info on the General Tire website. They claim that over inflation can cause steering problems when turning. I guess it's a matter of degree of overinflation. Since you have had the experience on this car, I'll tweak my pressure based on what you described until I find the right pressure for this time of year, I always add some just before the winter sets in.It's amazing how much pressure I lose as the temperature gets closer to zero and sometimes below that.
As a rule of thumb, air pressure in a tire will drop 1 PSI for every 10 degrees in ambient temperature (and increase when the temperature increases). I see you live in New York. I live in the Midwest, and see ambient temperatures range from about 10 below zero to 95+ degrees (Fahrenheit). I check tires pressures with the seasons, as well as monthly.
I have been driving for 50 years now (gave away my age...), and have owned many, many vehicles (passenger, vans, SUV, sportís cars, etc.). I have bought many sets of tires. I learned at a young age to check and maintain the tires. Tire quality has improved dramatically.
I have always checked my tire pressures as a matter of routine maintenance. The TPMS display readings used by GM are very good, and I have found them to always be within 1 PSI when using a high-quality tire gauge (and very convenient).
The advice given by Tesla was very good.
If you over-inflate your tires, they will wear unevenly in the center. Under inflated tires wear unevenly on the edges.
I really think the vehicle manufacturers recommend an optimum tire pressure setting for a variety of reasons - tire wear, noise, handling, suspension performance, etc.
Overinflated tires can overheat on long drives, just as under inflated tires can (even in cool ambient weather).
I think youíre on the right track to ask for advice and maintain your car. Good luck.