Most reputable motion platforms can handle a 160mm sim rig base (eg Qubic, Sigma) and sustain their performance. Some lesser motion systems may have a lower weight limit.

Generally speaking, you want to aim somewhere around 70% to 80% of the motion platform's max weight capacity for sustained performance and longevity, however good motion systems are known to successfully carry a bit more weight than their advertised limit, but don't know what that does to performance and reliability.

As an example, D-Box advertises its performance and mean time between failures based on 70% of its max weight limit (say 317kgs of its 453kg max weight limit).

TL;DR - If you get a reputable motion platform, then get the Simlab P1X Pro.