For most Audi A4 models, the official tire pressures you should use are listed on the driver's side door jamb placard, and you can verify or monitor them in real time via the car’s Tire Pressure Monitoring System (TPMS) in the instrument cluster or MMI. In practice, start with the door label and use the TPMS for live readings.
Primary source: door jamb placard
The door jamb placard on the driver's side door frame is the primary and most permanent source for official tire pressure values. It shows the recommended cold pressures for the front and rear tires, and it may also note the spare tire pressure. The values are typically given in both psi and kPa to accommodate different markets.
- Door jamb placard on the driver's side door frame showing the recommended cold pressures for front and rear tires (and sometimes the spare). Values are listed in psi and kPa.
- Owner’s manual section on Tire Pressure/Inflation that reiterates the correct figures and tire sizes used on your specific A4 model.
- TPMS guidance and readings available in the car’s instrument cluster or MMI when you’re driving or using vehicle settings.
The placard is the quickest and most reliable reference before inflating, while the manual provides model-year specifics and tire size details that may affect the exact numbers.
Tire pressure monitoring system (TPMS) in the Audi A4
Beyond the static placard, the Audi A4 uses TPMS to monitor each tire’s pressure in real time. If a tire falls below the recommended level, the system triggers a warning light in the instrument cluster and may display per-tire readings on the digital display, depending on the model year and trim.
Access to TPMS readouts varies by generation: older iterations show basic alerts, while newer models often allow you to view exact pressures for each tire through the instrument cluster menus or the MMI system.
How to check and adjust tire pressure
Follow these steps to ensure you inflate to the correct cold-tyre pressures on your Audi A4.
- Ensure tires are cold: avoid inflating right after a drive, since heat raises the reading and can mask the true pressure.
- Locate the door jamb placard on the driver's side to note the recommended front and rear pressures.
- Remove the valve cap from the tire you’re checking.
- Attach a reliable tire pressure gauge and read the current pressure.
- Inflate or deflate as needed to reach the recommended pressure for that tire position (front or rear).
- Replace the valve cap and recheck all four tires for consistency; if the TPMS shows a low tire, recheck and adjust accordingly.
After inflating, drive a short distance to allow the TPMS to recalibrate and confirm the readings are stable.
Summary
The door jamb placard on the driver's side provides the official cold-inflation pressures for an Audi A4, and the TPMS offers real-time monitoring and alerts. Always start with the placard, verify with the manual for model-year specifics, and use the TPMS readouts to confirm and monitor tire pressures during regular driving.