Put a piece of rope on the roof of the car that goes from back bumper to front bumper.
Mattress and box spring on top of car.
There should be enough to secure one end under the front of your car and enough at the other end to secure the second end under the back of your car.
Place the mattress on the roof making sure it s in the middle.
Still there is a basic method to follow when tying a mattress to the roof of a car.
I have a hyundai accent and need to move a queen size mattress and box spring 50 miles.
While driving with a mattress on top of your vehicle it is a good idea to stick to the back roads and stay off of busy streets just in case something happens.
Secure your mattress to the top of the car.
In addition keep an eye on the mattress so you notice if it starts to slip a rope comes loose or the plastic breaks.
I ve moved a full size mattress on top of the car before easily.
You can use a plastic mattress cover to prevent your mattress from collecting dirt and permanent stains.
During the process of being moved the sides and top of your mattress may come in contact with floors stairs the ground outside and the inside of a moving van or the top of your car.
Toss the first long piece of rope over the length of the mattress.
Put the mattress on top of the car and rope so that it goes length wise with the length of the car see pics above.