BMW M340i Tire Pressure
The recommended cold tire pressure for the BMW M340i is 35 PSI in the front and 38 PSI in the rear, consistent across every model year and trim covered on this page. Tire size may shift the recommended value by 1–2 PSI; verify against the driver-side door jamb sticker for your specific configuration (225/40R19, 255/35R19).
Recommended Tire Pressure (Cold)
Always check on cold tires (parked 3+ hours). Verify on driver-side door jamb sticker.
All data is for informational purposes only. Always refer to your vehicle's owner's manual for the correct tire pressure.
Compatible Tire Sizes
Tire Pressure by Model Year
Select your BMW M340i model year to see the exact tire pressure specifications for that year, including any tire-size-specific variations.
How to Reset the TPMS Light on a BMW M340i
- Inflate all four tires to the recommended cold PSI (shown above and on the driver-side door jamb sticker).
- Drive the vehicle above 25 mph for at least 10 minutes. The TPMS receiver typically re-learns the sensor pressure during this drive cycle.
- If the light remains on, with the vehicle parked and the ignition ON (engine off), locate the TPMS reset button — on most BMW M340i models it is below the steering wheel or inside the glove box.
- Press and hold the TPMS reset button until the tire pressure indicator blinks three times, then release.
- Start the engine and wait a few minutes for the new baseline pressure to register.
If the light returns after a reset, re-check cold PSI on all four tires plus the spare, then inspect for a slow leak. Persistent warnings usually mean a faulty TPMS sensor (typical replacement cost: $50–$100 per wheel at an independent shop).
Frequently Asked Questions
What is the recommended tire pressure for a BMW M340i?
The recommended cold tire pressure for the BMW M340i is 35 PSI for all four tires. Always verify against the driver-side door jamb sticker for your specific trim and tire size (225/40R19, 255/35R19).
How do I reset the TPMS light on a BMW M340i?
After inflating to the recommended PSI, drive above 25 mph for 10+ minutes. If the light stays on, locate the TPMS reset button (typically below the steering wheel) and hold it until the indicator blinks three times. The receiver usually re-registers the new baseline on the next drive cycle.
Does the BMW M340i have a separate tire pressure for a performance or hybrid trim?
No — the recommended cold PSI is the same across every BMW M340i configuration on the standard tire size (225/40R19, 255/35R19). Performance trims, when equipped with wider tires, may list a different PSI in the tire-size table above.
Why does my BMW M340i tire pressure read higher than 35 PSI after driving?
Driving heats the tires and raises the PSI reading by 2–4 PSI. The 35 PSI recommendation is a cold pressure measured before driving or after at least 3 hours parked. Never deflate to 35 PSI after driving — you'll end up under-inflated once the tires cool.
What happens if my BMW M340i tire pressure is too low?
Under-inflated tires increase rolling resistance, reducing fuel efficiency by up to 3%. They wear faster on the outer edges, generate excess heat that can cause blowouts at highway speeds, and reduce braking and handling performance. If your TPMS warning light is on, check your tire pressure as soon as possible.
Need a reliable tire pressure gauge? See our guide to the best tire pressure gauges →