Flat Tire Problem

1. General

Examine spare wheel
If it is in good shape
    then you can try to repair yourself
    else you should get external help

2. Repair yourself

Get tools
Get spare wheel
Change the wheel
Store defective wheel
Store tools

3. Change the wheel

Loosen bolts
Lift car with jack
Remove bolts
Take bad wheel away
Put spare wheel in place
Put back bolts
Lower car with jack
Fasten bolts

4. Get tools

If tools are missing or defective
    then try to borrow good tools
    until you have good tools
    or you are tired trying
If you still don't have good tools
    then you need external help

5. Store tools

If tools were borrowed
    then return tools to owner
    else store tools in the car