How do I know if rims will fit my tyres?

How do I know if rims will fit my tyres?

You will see a series of letters and numbers that will look like this 

for example: 205/55R16. This will confirm the size of the tyres on your vehicle. Make sure all 4 tyres read the same size, as some vehicles come with staggered fitments which means the front and rear wheels and tyres can be different sizes.