I was looking at some bike racks and came across these:
https://www.velocirax.co.nz/products/velocirax-3x
then noticed that they require a max tongue capacity of 227kg in the "hitch specifications", which seemed quite high especially since they mention subaru crosstrek as a potential vehicle for them?
It also seemed odd that the max tongue capacity required doesn't change from the 3 bike version right through to the 7 bike version... Which got me thinking that maybe I'm misunderstanding the meaning of tongue capacity or something?