plugs are not the best if you are running the shit out of your bike, 90 mph around corners, very hard braking, etc. Any puncture in a tire compromises the design of the tire. I have rode on plugs tons, but I am a bit more cautious, always rembering I have a plug in the tire, but get the most out of the tire until I can afford to buy a new one. If you have 300 bucks you can get a new SET of tires. Get on ebay and start looking. Buy two tires, and some balance beads. Get your bike hung/ put up on your stands/ layed over on its stand, whatever, and remove your wheels. Next week when they come in (and your next pay check), take them to your local tire shop or bike shop and pay them 40-50 bucks to dismount and mount the tire. While they are mounthing the tire have them throw the beads in. Dont let them sell you some BS valve stem replacement, special balance bull shit, whatever. Just standard dissmount/ mount (usually $20 or so each wheel). Come home and put your wheels back on and enjoy your brand new set of tires.