Tire plug - The plug is supposed to be a temporary fix. You do not want to drive on the plug for the remaining life of the tire. Plugs can separate after time causing the tire to split. Do not attempt to add air to the Tire if it has sidewall damage. This may cause serious injury if tire exploded.
Tire patch - A patch can be a stronger repair than a plug.Your vehicle can be driven with a patched tire if the tire has been professionally fixed. The tire patch is done from the inside of the tire and requires sealant and a patch with a plug attached to it for more protection. More automotive repair shops are going to patching tires to ensure the safety of the driver and others on the road.