Tire Size
The MPX/0.47/275/27.5 part of the generic tire size denotes the tire first character, followed by the aspect ratio, width, and rim diameter respectively.
The first character "M" stands for the tire width which is the measurement of the tire taken from the widest point of the tread. This tire has a tire width of "P," which stands for "Passenger."
The second part, "0.47," is the aspect ratio and refers to the height of the sidewall relative to the width of the tire. A lower aspect ratio indicates a taller tire sidewall and a higher aspect ratio indicates a lower tire sidewall. In this case, the aspect ratio is 0.47, which corresponds to a tire sidewall height of 47% of the tire width.
The third part of this generic tire size, "275," is the nominal tire width expressed in millimeters. This tire's width is expressed as 275mm, which is equal to 10.84 inches.
The fourth and final part of the tire size, "27.5," denotes the rim diameter expressed in inches. This tire has a rim diameter of 27.5 inches.