BMW 840i Tire Sizes, Rim Dimensions & Trim Comparison by Year
The BMW 840i features varying tire sizes and rim dimensions depending on its model year and trim level. Earlier models often come equipped with 19-inch to 20-inch rims, with widths ranging from 8.5 to 9.5 inches. Tire markings typically include widths between 245 and 275 mm with aspect ratios from 30 to 40.\n\nTrim variations influence the exact wheel and tire fitment, with sport trims favoring wider and lower profile tires for enhanced handling. It's essential to refer to the specific tire size markings stamped on the sidewall for accurate replacement or upgrade.\n\nWhen comparing trims, note that rim diameters remain consistent within model years, while width and tire profiles can shift. This variation affects ride comfort and performance, making it important to choose tires that align with your driving style and trim specifications.\n\nAlways check the manufacturer's recommended tire pressure and size for each trim to ensure optimal safety and performance. Consult the owner's manual or a tire specialist if in doubt about the best fitment options for your BMW 840i.
| Make / model / trim | Year | Tire size | Wheel |
|---|---|---|---|
| BMW 840i M Sport Pro (standard 21") | 2026 | 245/30R21 | 8" × 21" |
| BMW 840i M Sport Pro (w/ optional 21") | 2025 | 245/30R21 | 8" × 21" |
| BMW 840i M Sport Pro | 2024 | 245/35R20 | 8" × 20" |
| BMW 840i M Sport (standard 20") | 2023 | 245/35R20 | 8" × 20" |
| BMW 840i M Sport (w/ optional 20" wheels) | 2022 | 245/35R20 | 8" × 20" |
| BMW 840i M Sport | 2021 | 245/40R19 | 8" × 19" |
| BMW 840i Base | 2020 | 245/45R18 | 8" × 18" |
For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for BMW 840i.
FAQ
- What tire sizes are common for the BMW 840i?
- Common tire sizes range from 245/35ZR19 to 275/30ZR20, depending on the model year and trim.
- How do rim widths vary between BMW 840i trims?
- Rim widths typically range from 8.5 to 9.5 inches, with sport trims often having wider rims for improved handling.
- Can I interchange tires between different 840i trims?
- While some sizes overlap, it’s best to match tire size and rim dimensions to the specific trim to maintain performance and safety.
Tire size calculatorShow
Compare two tire sizes — diameter, speedometer error, and clearance change.