There are 2 stored owner reports matching the tires & wheels leading-label group for the 2003 BMW Z4 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)DT*: THE CONTACT STATED WHILE DRIVING 45 MPH ON DRY ASPHALT ROADS, A VIBRATION WAS HEARD IN THE VEHICLE. THE TIRE SENSOR LIGHT CAME ON, AND THE CONTACT DROVE THE VEHICLE HOME. UPON INSPECTION OF THE DRIVER SIDE FRONT TIRE, THE CONTACT DETERMINED THAT THE SIDE OF THE TIRE CLOSEST TO THE VEHICLE APPEARED TO HAVE RUBBED AGAINST THE SHOCK ABSORBER, AND THE CORDS WERE VISIBLE WHERE THE TREAD MET THE SIDEWALL. THE VEHICLE WAS NOT TAKEN IN FOR SERVICE.
CONSUMER NOTICED THAT BOTH REAR TIRES BULGED WHILE PARKED. VEHICLE WAS TAKEN TO THE DEALER, WHO CONFIRMED THAT BOTH INSIDE SIDEWALLS WERE BULGING AND NEEDED TO BE REPLACED. THE TIRE MANUFACTURER WAS NOTIFIED.*AK *SB *NM
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.