NHTSA Complaint #11688911 — 2025 HARLEY-DAVIDSON FLHX

This motorcycle is unstable at highway speeds. I believe the aerodynamics of the fairing and the front fender are to blame. It is not an issue when I ride the bike with a passenger, thus more total weight resolves the issue. I am 160 lbs. and when I ride solo and get around semis, or have a headwind, the front end begins to shake side to side at around 70mph, depending on the wind, oscillation begins and I need to pull over before the bike goes into a speed wobble (tank slapper). I've had the bike back to the dealership multiple times and they say there is no issue. They suggested upgrading the suspension, which I did and that has not resolved the issue nor is that money refundable. They have test ridden but it was a 190 lbs technician. Again, this doesn't happen with heavier riders or with a passenger on the bike. Clearly Harley's design engineers using Computational Fluid Dynamics did not add any assumptions for solo riders under 170 lbs nor did they test the design with lighter riders.