ROTA D2-X2 18X9X5/114.3 FLAT GM YB

• ROTA D2-X2: This likely refers to the model or series of the wheel.
• 18X9: This indicates the diameter and width of the wheel in inches.
• 5/114.3: This represents the bolt pattern of the wheel, where 5 indicates the number of bolts and 114.3 is the diameter of the bolt circle in millimeters.
• FLAT GM YB: This part seems to describe the finish or color of the wheel. "Flat GM" could refer to a flat finish in a shade similar to a General Motors (GM) color, and "YB" might represent a specific color code or designation.

In summary, the specification you provided describes a ROTA D2-X2 wheel with dimensions of 18 inches in diameter and 9 inches in width, with a 5-bolt pattern on a 114.3mm bolt circle diameter, and a flat finish in a color possibly related to General Motors.