2. Incorrect selection of wheels and tires can adversely affect handling, wheel and bearing life, brake cooling, speedometer/odometer accuracy, braking distance, headlight direction, bumper height, ground clearance, and tire-to-body clearance.
As an example, here is a possible marking:
8JJX16H2 ET60 6H PCD150 DIA110
In the wheel disk marking, the first digits "8" indicate the rim width (H), expressed either in millimeters or inches. The letters "JJ" indicate the rim shape. The subsequent number "16" indicates the wheel disk seat diameter (D) in inches, which must match the seat diameter of the tire being installed. The number "60" after the letters ET indicates the disk offset (ET) in millimeters. The marking also includes the following designations: "H" or "H2" means the presence of one or two annular protrusions on the rim, "6H" indicates the number of holes for mounting bolts or studs, the numbers after the designation "DIA" are the diameter of the central hole, "PCD" is the diameter of the holes for mounting bolts or studs.
(Original version of the article on the website chevyman)