Final answer:
The rounded measurements to three decimal places for the tire sizes given are provided below.
Step-by-step explanation:
For P285/60R15: - Width (mm): 285 - Aspect Ratio %: 60 - Height (in): 9.53 - Diameter (in): 27.52 - Circumference (in): 86.28
For P310/75R15: - Width (mm): 310 - Aspect Ratio %: 75 - Height (in): 11.81 - Diameter (in): 27.52 - Circumference (in): 86.28