I dont want to come off sounding like a dumb blonde(no offense to the smart women), but do tire plugs last. I got up sunday and my tire was all the way flat. Aired it back up, but it leaked out in about a day and half. Just got it plugged today. Its on the inside of the tire on the side. Havent put the tire back on, but so far it isnt leaking. A new tire is going to run about $200. I got Toyo OpenCountry A/T 285/60/18.