What is the relationship between P225/60R16 and 225/60R16 tires?

The designation P225/60R16 and 225/60R16 refers to the same tire size with slight differences in the prefix. The "P" in P225 indicates that the tire is a "passenger" tire, which is a standard classification for tires used on passenger vehicles. In contrast, the 225/60R16 designation without the "P" refers to the same tire dimensions but does not specify the category.

Both designations convey essential information: the width of the tire (225 mm), the aspect ratio (60, which represents the height of the tire as a percentage of the width), the construction type (R for radial), and the diameter of the rim (16 inches). Thus, despite the nomenclature difference, the two tires essentially have the same specifications and would perform identically on a vehicle designed to accommodate that size.

In summary, both tire designations represent the same physical size and specifications, making them interchangeable depending on the context in which they are used.