NHTSA Complaint #11341767 — 2004 BMW Z4

I HAVE A 2004 BMW Z4 WHICH I PURCHASED USED IN 2016 WITH 67000 MILES ON IT. OVER THE PAST 2 YEARS, THE STEERING HAS BECOME STICKY AND HARD TO KEEP THE VEHICLE IN MY LANE WHEN TRAVELLING STRAIGHT. I HAVE TO CONSTANTLY CORRECT THE STEERING AS THE CAR TRIES TO PULL EITHER TO THE LEFT OR RIGHT. ALSO, IT IS HARD TO CORRECT THE PULL, RESULTING IN JERKY DRIVING OR OVERCORRECTION. THE PROBLEM HAPPENS WHEN DRIVING BOTH STRAIGHT AND ON CURVES. IT SEEMS TO HAPPEN MORE OFTEN IN WARMER WEATHER, BUT HAVE EXPERIENCED A SLIGHT PROBLEM EVEN IN COOLER WEATHER. IT HAS OCCURRED AT BOTH SLOWER SPEEDS AND HIGHWAY SPEEDS. THIS PROBLEM BEGAN AT APPROXIMATELY 80000 MILES. I HAVE OWNED THE CAR 5 YEARS AND HAVE PUT LESS THAN 20000 MILES ON IT IN THAT TIME PERIOD, SO IT IS NOT DRIVEN EXCESSIVELY OR UNDER HARSH DRIVING CONDITIONS.