What is a pcd?

it depends on reference, PCD its a stand for portable CD player, the electronics companies they use this stand,

a pcd may also stands for PussyCATDOLLS

*a band*

Please ignore the stupid answers above PCD stands for Pitch Circle Diameter and relates to the stud fitment for your car wheels basing it on an imaginary circle with a diameter in millimetres running through your stud holes in the wheel for example a 1992 Ford Escort xr4i soft top has a pcd of 4x108 = 4 because there are 4 studs to the wheel and 108 because the diameter of the imaginary circle linking all four holes is 108mm, Kind regards Mrgus.