My front tire had a very small hole. Instead of using an injection I bought the Slime sealant. The way the product works is
1. Remove the valve core.
2. Pour into the tire about 8oz.
3. Install the core
4. Fill with air to spec pressure.
The product runs though the inside of the tire. When there's a hole, the product slips through it and the heat of the outside of the tire and the road hardens the product so it seals the hole.
After using it I have to say that it really works, and fast. Now, the tire has to be hot for it to work. Once it's added you'll probably have to ride for about 15 minutes then re fill the tire with air.
The cap of the sealant doubles as a valve core remover.
I definitely recommend it. It should be used whenever the tires are changed for new ones.
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