BMW 840i Wheel Lug Pattern, Offset ET, Center Bore & Rim Size Reference
The BMW 840i features specific wheel lug patterns (lug count × PCD) tailored to ensure perfect wheel mount compatibility. Understanding the correct bolt pattern along with offset ET and center bore dimensions is crucial when selecting wheels or replacements.\n\nBMW 840i models utilize wheel fitment standards that commonly include a 5x112 mm lug pattern, with offset (ET) values typically ranging between ET20 and ET30. The vehicle’s center bore usually measures 72.6 mm to provide the proper hub-to-wheel interface.\n\nWheel rim sizes compatible with BMW 840i span from 18 to 20 inches depending on the model year and trim level, influencing overall handling and aesthetics. Consult the year-sorted reference data to confirm precise lug pattern, offset, and bore details for your specific BMW 840i.\n\nThis catalog enables BMW 840i owners and enthusiasts to identify the correct wheel mounting specifications, facilitating safe, reliable upgrades or replacements without compromising vehicle performance or safety.
| Make / model / trim | Year | Tire | Rim width (in) | Rim diam. (in) | Bolt pattern | Offset ET | Bore DIA | Mounting |
|---|---|---|---|---|---|---|---|---|
| BMW 840i M Sport Pro (standard 21") | 2026 | 245/30R21 | 8 | 21 | 5×120 | 35 | 21 | M14*1.25 |
| BMW 840i M Sport Pro (w/ optional 21") | 2025 | 245/30R21 | 8 | 21 | 5×120 | 35 | 21 | M14*1.25 |
| BMW 840i M Sport Pro | 2024 | 245/35R20 | 8 | 20 | 5×120 | 35 | 20 | M14*1.25 |
| BMW 840i M Sport (standard 20") | 2023 | 245/35R20 | 8 | 20 | 5×120 | 35 | 20 | M14*1.25 |
| BMW 840i M Sport (w/ optional 20" wheels) | 2022 | 245/35R20 | 8 | 20 | 5×120 | 35 | 20 | M14*1.25 |
| BMW 840i M Sport | 2021 | 245/40R19 | 8 | 19 | 5×120 | 35 | 19 | M14*1.25 |
| BMW 840i Base | 2020 | 245/45R18 | 8 | 18 | 5×120 | 35 | 18 | M14*1.25 |
FAQ
- What is the standard wheel lug pattern for a BMW 840i?
- The standard wheel lug pattern for BMW 840i models is 5x112 mm, meaning 5 lug nuts spaced on a 112 mm pitch circle diameter.
- Why is wheel offset (ET) important for BMW 840i fitment?
- Wheel offset (ET) affects how the wheel aligns with the suspension and fenders; incorrect offset can cause handling issues or rubbing, so matching the BMW 840i’s specified ET range is essential.
- Can I use wheels with a different center bore on my BMW 840i?
- Using wheels with a center bore different from the BMW 840i’s standard 72.6 mm can cause improper mounting or vibration; hub-centric rings may be needed to adapt wheels with larger center bores safely.
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