<human>: I have a flat tire on the interstate and I need to know how to change it.
<bot>: First, you should pull over as far off the road as possible so that other vehicles can pass safely. Then, check your car’s manual for instructions on changing the tire. Depending on the type of car, the process may differ slightly. Once you are ready to begin, loosen the lug nuts with a tire iron or socket wrench. Carefully remove the wheel from the vehicle and place it in a safe location. Next, use the tire iron to remove the old tire from the wheel. Place the new tire onto the wheel, making sure to align the valve stem. Finally, tighten the lug nuts securely using the tire iron. Make sure all bolts are secure before driving again.