The tire plug method of repairing tires is a mysterious thing. The first time you see one installed brings feelings of amazement and doubt. You're amazed that it held air but doubt it will last more than a day or two. The fact is that a proper tire repair will last forever. Why should you have to replace one of your tires with perfectly good tread just because a nail danced its way into your life?
For about $5 and 5 minutes of your life, you can give a dead tire a new lease on life by using a common tire plug. It's just too easy to pass up.
Never attempt to plug a sidewall! Your tire's sidewall is under different strains and pressures than the part that makes contact with the road. Plugging a sidewall can result in a blowout, so don't try it.
*Note: The NHTSA has stated that a plug is not a proper permanent tire repair.
*Update! For the past few years we've been testing out a different tire plugging system at the shop, and we are very pleased. Check out our review of this much easier system here!