u/Educational-Pack6595

Hey all,

I’m trying to diagnose a stability issue on my 2018 Tesla Model S 75D (USA), and I’ve already ruled out most of the common stuff, so I’m a bit stuck.

Symptoms:

• At highway speeds, on uneven road the car feels unstable / sways side-to-side. No vibrations or pulling on either side.
• Doesn’t feel planted, only happens at high speed, even on a slightly bumpy road
• Feels like “floating” slightly
• No clunks, noises

What I’ve already checked/done:

• All suspension bushings inspected → no visible wear/cracks
• No play in any wheel (checked in all directions)
• Tires ~80% life remaining
• Wheels balanced recently
• Switched to OEM 19" Slipstream wheels
• Replaced the rear control arm links
• Full alignment at Tesla Service Center

At this point, I don’t want to just start throwing parts at it blindly. I have already spent over $1500 trying to fix this issue.

If anyone has dealt with something similar or has ideas on what to check next, I’d really appreciate it.

Thanks!

Hey all,

I’m trying to diagnose a stability issue on my 2018 Tesla Model S 75D and I’ve already ruled out most of the common stuff, so I’m a bit stuck.

Symptoms:

• At highway speeds, on uneven road the car feels unstable / sways side-to-side. No vibrations or pulling on either side.
• Doesn’t feel planted, only happens at high speed, even on a slightly bumpy road
• Feels like “floating” slightly
• No clunks, noises

What I’ve already checked/done:

• All suspension bushings inspected → no visible wear/cracks
• No play in any wheel (checked in all directions)
• Tires ~80% life remaining
• Wheels balanced recently
• Switched to OEM 19" Slipstream wheels
• Replaced the rear control arm links
• Full alignment at Tesla Service Center

At this point, I don’t want to just start throwing parts at it blindly. I have already spent over $1500 trying to fix this issue.

If anyone has dealt with something similar or has ideas on what to check next, I’d really appreciate it.

Thanks!