BMW Z4 Tire Size Guide by Model Year and Trim | Rim Width & Diameter
The BMW Z4 offers various tire sizes across its model years and trim levels, reflecting changes in performance and design. Typically, tire size markings include width, profile, and rim diameter, such as 255/35ZR19, where 255 represents the width in millimeters, 35 the aspect ratio, and 19 the rim diameter in inches.\n\nTire sizes vary by model year and trim, with sportier trims often featuring wider rim widths and larger diameters for enhanced handling. Rim widths generally range from 7.5 to 9 inches, paired with diameters between 17 and 19 inches. This affects both aesthetics and driving dynamics.\n\nWhen comparing trims, pay attention to the tire markings to understand handling differences. Wider tires and larger rims can improve grip but may affect ride comfort. Always consult the owner’s manual or tire placard for OEM specifications to ensure proper fitment and safety.
| Make / model / trim | Year | Tire size | Wheel |
|---|---|---|---|
| BMW Z4 sDrive30i | 2026 | 225/45R18 | 7.5" × 18" |
| BMW Z4 M40i | 2025 | 255/35R19 | 8.5" × 19" |
| BMW Z4 sDrive30i | 2024 | 225/45R18 | 7.5" × 18" |
| BMW Z4 M40i | 2023 | 255/35R19 | 8.5" × 19" |
| BMW Z4 sDrive30i | 2022 | 225/45R18 | 7.5" × 18" |
| BMW Z4 M40i | 2021 | 255/35R19 | 8.5" × 19" |
| BMW Z4 sDrive30i | 2020 | 225/45R18 | 7.5" × 18" |
| BMW Z4 sDrive30i | 2019 | 225/45R18 | 7.5" × 18" |
For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for BMW Z4.
FAQ
- How do I read the BMW Z4 tire size markings?
- Tire size markings denote width, aspect ratio, and rim diameter, for example, 255/35ZR19 means 255mm width, 35% height, and 19-inch rim.
- Do BMW Z4 tire sizes vary between trims?
- Yes, sportier trims usually have wider rims and larger diameters for better performance compared to base trims.
- Can I use different tire sizes than the original BMW Z4 specification?
- It's best to follow OEM recommended sizes to maintain handling, safety, and speedometer accuracy.
Tire size calculatorShow
Compare two tire sizes — diameter, speedometer error, and clearance change.