Tesla Tire Pressure Gauge
Direct answer
For most owners, a separate Tesla tire pressure gauge is not required. The vehicle displays live tire pressure readings from its tire pressure monitoring system, and this is the figure you should use when adjusting pressure. A standalone gauge is useful as a backup, for checking a spare, or when the car has been parked long enough that the displayed values need a short drive to refresh.
Use the in-car reading first
Tesla models including the Model 3 show individual tire pressures in the vehicle interface. The reading comes from sensors inside each wheel, not from a central estimate. Because the display reports pressure to the nearest pound per square inch or bar, it is the primary reference for matching all four tires to the recommended cold pressure.
A condition that changes the answer is temperature. Tire pressure changes with heat. The recommended value is a cold pressure, meaning the tire has not been driven for at least three hours or has been driven less than one mile at low speed. If you check after highway driving, the displayed number will be higher than the cold specification, so you should not bleed air down to the cold number while the tires are hot.
When a standalone gauge helps
A physical gauge is useful when the in-car reading has not refreshed after a long park, when adding or removing air at a pump that lacks a reliable display, or when checking a tire that is not mounted on the car. Any quality digital or dial gauge that reads in psi and bar can work. There is no Tesla-specific gauge requirement, and a unique Tesla-branded gauge is not needed for the Model 3 or other Tesla vehicles.
Setting the pressure
Start with the tires cold. Check the recommended pressure shown on the driver-side door pillar label or in the vehicle settings for your specific model, year and wheel size. Tesla pressure recommendations can differ by wheel diameter and market, so the door label is more reliable than a general number. Add or remove air in small amounts, then compare the change against the in-car display if it is active, or against your standalone gauge if the display has not refreshed.
What the gauge does not tell you
Pressure is only one part of tire condition. A correct reading will not reveal tread wear, sidewall damage, uneven wear from alignment, or a slow leak that only appears under load. If one tire repeatedly loses pressure while the others hold steady, the next step is a leak inspection, not a more precise gauge.
Gap in available coverage
This article does not provide a model-year-by-model-year pressure table, current pricing for any gauge, or test comparisons between gauge brands. Those details were not supplied in the source material, so any specific price, shop recommendation or measurement would be invented.