I've learned to ignore the PSI fluctuations that occur 24/7. I can start my day at 50f, 38psi, in Fort Worth, and 7 hours later, 85f+, in Corpus Christi, TX, psi would be 45-47psi, after steady highway cruising at 80mph. If I need to stay more than a day or two, I'll bleed off some air, mostly to prevent harshness to the ride.
Every autumn, there are a ton of threads in multiple car/tire forums about PSI concerns, which are simply caused by the drop in ambient temps.
I don't know the max psi, printed on the side of every tire, on the variety of OEM Tesla tires, but it could range from 44-51 (My Michelin Pilot Sport say 50psi).
AFAIK, a healthy, well designed tire, has a burst pressure of 200psi, so we're not at risk of tire rupture if under 50psi.
Underinflation? Not a huge risk, either, except for potential rim damage, excessive edge wear, and lower efficiency.