Seat

[Rifman]

Passenger seat moves when taking off from a stop. Just about a inch or so. Like its not locked in. Any thoughts.
Thanks.

 

[hard top]

I would suspect that the seat bushings are worn out.

 

[jonco]

As already stated probably worn bushes - have a look at this https://zroadster.org/articles/how-to-fix-your-bmw-z3-rocking-seats-changing-the-bushes-bushings.51/

 

[Fender2004]

There are how to guides on YouTube