The best way to confirm the tyre pressure is to look for this sticker on the driver’s side door, this clearly confirms the size of your tyre on your car and the correct pressure.
Remember tyre pressures should be checked when the tyres are cold and it’s important to remember the longer you drive the higher the temperature of the tyre. The best tyre pressure pump for your money is this one. You might consider buying this tyre tread tool as well.
The below is a rough guide, it will vary on your vehicle, the tyres fitted and your pump, if you’re unsure then contact Tesla.
21″ Staggered – 40-42psi
21″ Square Model S – 40-42psi
19″ Square Model S – 42-45psi
20″ Square Model X – 40-42 psi
22″ Square Model S – 42