<human>:  How do I fix a punctured car tire?
<bot>: First, you will need to ascertain the extent of the puncture. If the puncture is relatively small, try a simple repair kit and follow the instructions. First, clean the puncture area and use the self-vulcanizing plug to patch up the hole. Place the plug inside the tire and press it firmly against the puncture, then inflate the tire. If the puncture is too large for a simple repair, you will have to replace the tire by taking off the wheel and replacing it with a new one.