If you're running steel belted tires, be aware that the soft mushroom type plugs used in the Plug 'n Go kits may not hold up other than as a very short term emergency type repair. Depending on exactly where the puncture is in relation to the nearest steel belt strand, the flex of the tire may result in the steel strand cutting off the soft inside head of the mushroom plug, resulting in failure of the plug. A friend of mine used one of these plugs on the OEM Bridgestone rear tire on my '04 FJR last year after I picked up a huge nail. The repair lasted the 60 miles to get me home but the tire was totally flat again the next morning. I was going to buy one of the Plug 'n Go kits until that happened, but that changed my mind. I plugged the tire with the same type of sticky string type plugs (with the addition of rubber cement) that I've used on my cars and trucks for the past 25 years, have never had a tire failure with this with any of my vehicles, in probably 30-40 uses. This was my first time using the string type plug in a mc tire but it lasted for 2700 miles until I replaced the tire. Regardless of which type of repair you use, best advice is to consider it a temporary emergency repair and either replace the tire (best bet) or have an inside patch done for a permanent repair, if you can find someone who will repair a mc tire (see below).
By coincidence, yesterday I discovered the rear Avon tire on my '04 FJR was flat. Apparently picked up a very tiny little metal sliver of some sort while on an 1800 mile ride up to Oregon and Washington two weeks ago. Hadn't ridden the bike in over 10 days since returning home. Called my mechanic up and asked if he was still doing inside patch mc tire repairs--he said NO, his liability insurance now prohibited it and I probably wouldn't find a mc shop in the area that would do a mc tire repair. He was right, I called four shops and they all said they did NOT do mc tire repairs any longer. So I plugged the Avon with my trusty old sticky string plug w/rubber cement, let it dry for a couple hours (not really necessary but I do it if I have the time), used the small bicycle foot pump I carry in the sidecase of the FJR to inflate the tire to 42 psi, checked for leaks with the soapy water solution--no leaks, all is good. I have 9600 miles now on the Avons, still have probably 2000-3000 miles more wear before I will hit the wear bars but will probably replace the tires (front and rear) within the next month or so. Until then, I'm confident the string type plug will hold up fine.
My experience, for what it's worth.
Lee in the Mountains of Northern California B)