6-PR : Ply Rating (PR) is indicator of the load capacity of the tire. The number has no direct relationship to the number of plies.
M+S : Mud and Snow.
WL : White letter: means that the writing on the sidewall is white.
ROADSTONE ROADIAN MT
6-PR
M+S
WL
Size : 235/75 R15
Load I. : 104 Speed I. :Q