The Tyre Repair Kit is a one-use item found at Outershops/gas stations. They are used to repair flat tires, making them useful again for a short while.
The cumulative cost of repairing a tire is cheaper than replacing the whole tire with a new one. To use it jack up the tire in question, unbolt the tire pickup the repair kit then click the tire bolt it in place put the jack away and your done.
It fixes 1 of 3 parts of the tyre.