Michelin 225/45/R17 Primacy 4 ST Apollo indicating that the tire is

indicating that the tire is designed to be used without an inner tube

the "PATRIOT 275/65/R18 Rugged Terrain+" designation provides details about the tire's dimensions

An aspect ratio of 50% means the sidewall height is 50% of the tire's width

indicating that this tire is designed to perform well on various surfaces

Michelin 225/45/R17 Primacy 4 ST Apollo indicating that the tire isThe Michelin Primacy 4 ST tire in size 225 45 R17 is a premium touring tire designed for passenger vehicles, prioritizing comfort, performance, and longevity. Here's what the size specifications represent: 225: The tire width in millimeters. 45: The aspect ratio, representing the sidewall height as a percentage of the tire's width. In this case, the sidewall height is 45% of the tire's width. R17: The tire is designed to fit wheels with a 17 inch