What tyre size does a BMW iX use?

The most common size is 255/50R21. Depending on generation and engine, the BMW iX uses 4 different sizes including 255/50R21, 275/35R23, 275/40R22, 235/60R20.

Where do I find my exact BMW iX tyre size?

Check the tyre placard in the driver's door jamb or fuel flap, or use the lookup tool on this page to select your generation and engine.

Tyres › BMW › iX

BMW iX tyre sizes

All factory fitments by generation and engine — 4 sizes across 4 generations.

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Quick answer

The most common tyre size on the BMW iX is 255/50R21 (overall diameter ≈ 788 mm). Exact fitment depends on generation and engine — full breakdown below.

iX M (BMWi-N/Facelift) 2025 - SUV (2025–present)

Engine	Tyre sizes
iX M70 xDrive - 204 PS - Electrical	255/50R21 275/35R23 275/40R22

iX (BMWi-N/Facelift) 2025 - SUV (2025–present)

Engine	Tyre sizes
iX xDrive45 - 184 PS - Electrical	235/60R20 255/50R21 275/35R23 275/40R22
iX xDrive60 - 204 PS - Electrical	235/60R20 255/50R21 275/35R23 275/40R22

iX M (BMWi-N) 2022 - 2025 - SUV (2022–2025)

Engine	Tyre sizes
iX M60 - 190 PS - Electrical	255/50R21 275/40R22
iX M70 xDrive - 204 PS - Electrical	255/50R21 275/35R23 275/40R22

iX (BMWi-N) 2021 - 2025 - SUV (2021–2025)

Engine	Tyre sizes
iX xDrive40 - 139 PS - Electrical	235/60R20 255/50R21 275/40R22
iX xDrive45 - 184 PS - Electrical	235/60R20 255/50R21 275/35R23 275/40R22
iX xDrive50 - 190 PS - Electrical	235/60R20 255/50R21 275/40R22
iX xDrive60 - 204 PS - Electrical	235/60R20 255/50R21 275/35R23 275/40R22

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