a really dumb question

most big trucks run left handed lugs on left side till mid 90s and reason is thayd come lose!! the new hub pilot hubs use right hand threads and ive had them come lose couple times, there known for it!
oh, it's a real thing. In physics it's called the "right hand rule." You curl the fingers of your right hand in the rotational direction of your wheel and your extended thumb points in the direction of the generated force. So for a vehicle moving forward the left side has a force pulling the wheel away from the car, and for the right side of the vehicle you have a generated force pressing the wheel towards the car.