BMW Z4 Coupe (E86) Tire Sizes & Rim Dimensions by Year and Trim
The BMW Z4 Coupe (E86), produced from 2006 to 2008, features several trim levels with varying tire size markings tailored to enhance handling and ride comfort. Standard trims often come with front tires sized 225/45ZR17 and rear tires 255/40ZR17, fitted on rims measuring 7.5 to 8.5 inches in width with a 17-inch diameter.\n\nHigher trims and performance packages might offer upgraded tire and rim options, such as 18-inch rims with widths reaching up to 9 inches at the rear for improved grip. Knowing the specific tire size markings by model year and trim helps ensure compatibility when replacing tires or wheels.\n\nTo compare trims, focus on the rim width × diameter specifications alongside tire aspect ratios and load ratings. This comparison aids in selecting the right combination that maintains the vehicle’s performance balance and safety standards. Always verify manufacturer recommendations for exact fitment details.
| Make / model / trim | Year | Tire size | Wheel |
|---|---|---|---|
| BMW Z4 Coupe (E86) 3.0 si | 2009 | 225/45R17 | 8" × 17" |
| BMW Z4 Coupe (E86) M | 2009 | 225/45R17 | 8" × 17" |
| BMW Z4 Coupe (E86) 3.0 si | 2008 | 225/45R17 | 8" × 17" |
| BMW Z4 Coupe (E86) M | 2008 | 225/45R17 | 8" × 17" |
| BMW Z4 Coupe (E86) 3.0 si | 2007 | 225/45R17 | 8" × 17" |
| BMW Z4 Coupe (E86) M | 2007 | 225/45R17 | 8" × 17" |
| BMW Z4 Coupe (E86) 3.0 si | 2006 | 225/45R17 | 8" × 17" |
| BMW Z4 Coupe (E86) M | 2006 | 225/45R17 | 8" × 17" |
For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for BMW Z4 Coupe (E86).
FAQ
- What are the stock tire sizes for BMW Z4 Coupe (E86)?
- Stock tire sizes typically are 225/45ZR17 front and 255/40ZR17 rear, depending on model year and trim.
- How do rim widths vary across BMW Z4 Coupe (E86) trims?
- Rim widths generally range from 7.5 inches at the front to 8.5 or 9 inches at the rear for higher performance trims.
- Can I use tires from one trim on another BMW Z4 Coupe (E86)?
- Yes, but confirm tire size markings and rim dimensions match to ensure proper fit and maintain driving dynamics.
Tire size calculatorShow
Compare two tire sizes — diameter, speedometer error, and clearance change.
| Size 1 | Size 2 | Diff | Diff(%) | |
|---|---|---|---|---|
| Diameter | 25.0" | 25.4" | 0.5" | 1.89% |
| Width | 7.7" | 8.5" | 0.8" | 10.26% |
| Circumference | 78.4" | 79.9" | 1.5" | 1.86% |
| Profile height | 5.0" | 4.2" | -0.7" | -15.08% |
| Turnover per mile | 807 | 793 | 14 | -1.73% |
| Clearance | - | - | +0.2" | - |
Speedometer Error
(First wheel OEM size)
| Reading | 20 mph | 30 mph | 40 mph | 50 mph | 60 mph | 70 mph | 80 mph | 90 mph |
|---|---|---|---|---|---|---|---|---|
| Actual | 20.4 | 30.5 | 40.7 | 50.9 | 61.1 | 71.2 | 81.4 | 91.6 |