In 5.4, I wanted to know car on ground or not, so I attached cylinder SMs to tires’ sockets for checking overlap between tires and other acts. However they do not overlap other acts. Why? I must use 5.4.
Hey @Ayameike0606!
Make sure that the Generate Overlap Events property is enabled for not only your component, but also for other actors!
Btw, you can also consider doing a line trace from your actor to straight down with the length being the actor’s half height. Depends on the mechanics you have in mind tho.
Hope this helps! 
A cylinder SM I used did not collide. When I changed the SM to other cylinder SM, it collided. Thank you quick response! The way using line trace is what I should consider!!