Explanations:
The difference in the tire size between 195/65R15 and 195/60R15 is the aspect ratio. The aspect ratio is the ratio of the tire's height to its width. In this case, the aspect ratio of 195/65R15 is 0.65, while the aspect ratio of 195/60R15 is 0.6. This means that 195/65R15 tires are taller than 195/60R15 tires. The difference is not significant, but it is enough to cause problems if you try to change one tire for the other without making any other adjustments.
