I’m trying to code a car and want to be able to detect if and where each wheel is touching the ground. Everything I’ve seen when searching for how to detect collision has used Event ActorBeginOverlap, but since the wheel has physics, it won’t overlap at all. I’ve tried to use Get Closest Point on Collision, but can’t figure out how it’s supposed to work, if that’s even the right thing to use. I’m a bit stuck with this because, without it, I can’t make my car accelerate or brake properly.
Your car’s skeletal mesh has bones for each wheel. You can use the position of these bones and do a line trace downward towards the ground to check if the particular wheel is on the ground, something like this

P.S you have to do it for every wheel