What is the difference between 235 75R15 and 265 75R15?

What is the difference between 235 75R15 and 265 75R15?

The 265/75r15 tire is 30. R15 tire is 28. Their difference is about 1. Most flotation tire sizes have an equivalent metric tire size. For example, a flotation tire size of 31×10. R15 has a metric tire size equivalent to 265/75r15.