a plug or patch on a motorcycle tire should be just a temporary fix. there are those that might tell you they put thousands of miles on a bike after a fix, but i wouldn't do it. you only have 2 tires so you have less forgiveness than a car with 4 tires and one of them is patched. if a tire goes bad on a car, you might get stranded on the side of a road. if a tire goes bad on a bike, it could cause an accident and throw you off. i say your health and well-being are worth spending a few dollars on a new tire ASAP.