Before buying any new tyres, you will need to know your tyre size:
The first part is the tyre width (for example 205).
Next comes the profile which is a percentage of the width (for example 55)
Then comes the rim size, which is the internal diameter of the tyre, where the wheel goes (for example 16)
The last piece of information is the load and speed rating (for example 91W)
Once you have these crucial details, you can now search for your new or part worn tyres.