If you are uncomfortable with changing your tire on the side of the road. Call for assistance – do not drive with a spare tire or punctured tire unless you have run flat tires.
Never raise a vehicle with people inside.
It is beneficial to practice this operation in your driveway so you can complete the task quickly and comfortable on the side of the road.
Check the pressure of your spare tire frequently (at least once a month) and before long trips. There’s nothing worse than finding all you have to replace your flat tire with is… a flat tire.
Text taken from http://www.instructables.com/id/How-to-Fix-a-Flat-Tire/