BMW 330Ci speedometer malfunction with sporadic and erratic readings following tire change on BMW 330Ci

Some BMW 330Ci owners report experiencing speedometer malfunctions characterized by sporadic and erratic readings following a tire change. These issues can often be resolved through speedometer recalibration, which some owners can perform themselves with the right kits. Additionally, problems with the Vehicle Speed Sensor (VSS) may lead to inaccurate readings, necessitating inspection to ensure proper functionality. Electrical issues, including faulty wiring and connections, can also contribute to speedometer discrepancies, making it important to check the vehicle's electrical system. Furthermore, verifying that the installed tire types match the configurations set in the iDrive system is crucial for accurate speedometer performance. Owners should also ensure that the tire pressure aligns with the recommended levels, as incorrect pressure can affect readings. If erratic speedometer behavior persists, consulting a professional mechanic or BMW service center is advisable to diagnose and resolve any underlying issues.