Tire repair kit If the tire has deflated rapidly, a tire repair kit makes it possible for you to patch up the tire well enough for a short period. Tire air gauge This one isn’t so vital for emergencies, but is absolutely essential for preventive maintenance – keeping your tires fully inflated not only improves gas mileage, but reduces the risk of tire explosions. Road flares These are invaluable at night so that others can see you if you need to change a tire or such things. Flashlight (and extra batteries) Similarly, a flashlight is utterly essential at night if you need to change a tire. WD-40 This can help loosen any bolts that won’t come loose.