BMW Z4 wheels problems by year
21 NHTSA owner complaints name the wheels across 5 Z4 model years. The most reported year is 2009 with 11 reports.
| Year | Wheels reports | Share | Median mileage | |
|---|---|---|---|---|
| 2011 Z4 | 7 | 15% | — | |
| 2009 Z4 | 11 | 50% | — | |
| 2008 Z4 | 1 | 5% | — | |
| 2007 Z4 | 1 | 3% | — | |
| 2005 Z4 | 1 | 1% | — |
Share is the fraction of that year’s complaints naming the wheels. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.