For knock offs, one side of the car does have reverse threads, but I don't remember which.
Left and right can be all relative to your perspective. So if you are standing on your head facing the passenger side door of a left hand drive car, the front wheel would be on your left and the back wheel would be on your right.
However, when it comes to determining the left and right for a car, I think it is relative to sitting in the car. However, there is an exception, which is the engine, which is determined by facing the front of the car.
So if you have a left hand drive steering wheel (like in USA). The steering wheel is on left side of the car (when you are sitting in the car). I assume the left wheels are on same side of the car as the steering wheel. And the right wheels are on the passenger side.