Steps. 1. Locate the cause and size of the puncture. If the tire is blown out, or has a large hole, it will have to be replaced. If you rode it through a patch of thorns, it may have dozens of holes, but if it is a single small puncture, for instance a nail, often it can be fixed on the bike.It is better if it`s only minimal. Note, however, that when using it, you must still have a pump to re inflate the tire.  2 Fix-a-flat is an aerosol can with latex rubber and a compressed propellant that instantly inflates tires, but it is a high pressure and sometimes combustible mixture, so it is more suitable for much larger tires.