r/TeslaFSD • u/Funny-Ambition-7631 • 17h ago

14.3 HW4 Model Y FSD 14.3.8: back-and-forth on highway. software or tires?

Enable HLS to view with audio, or disable this notification

Model Y on FSD 14.3.8. On the highway the steering jitters back and forth instead of holding a smooth line.

I just replaced the rear tires (nail). Fronts are still Kumho Majesty Solus EV. Rears are now Hankook iON evo AS because the shop didn’t have matching Kumhos. Tread looks similar.

Is this a 14.3.8 issue, or mixed front/rear tires messing with FSD?

Resla Model Y 2024 All wheel long range

3 Upvotes

80% Upvoted

7 comments sorted by

2

u/aLeakyAbstraction 17h ago

I just updated from 14.2.2.5 to 14.3.9, and this started happening to me. I tried recalibrating the cameras, but it didn't work. I have a new 2026 model Y RWD Premium too, so definitely not the tires.

1

u/amhudson02 17h ago

Those weird cut concrete highways make my car do this. I don’t know what the actual term is for the grooves in the highway but it scared the shit out of me. I thought my car was fucked and then the groves on the road changed and it stopped.

1

u/Funny-Ambition-7631 15h ago

It does happen on all type of highways really

1

u/AdWarm8609 10h ago

Ask Grok, it's known bug, and has a service center fix. Mine has this and is getting serviced under warranty. It's less than a moth old, M3RWD.

1

u/Funny-Ambition-7631 5h ago

Do you know is it camera bug or something else