4/130 is a fairly common wheel attachment.
PCD means pitch circle diameter.
If you drew an imaginary circle around the centre of the studs or wheel holes that circle is called the pitch circle and it's diameter is the pitch circle diameter or PCD.
Many German cars for example use a 5/112 wheel which means 5 studs or bolts on a 112mm PCD
Doh, Bob beat me to it
Last edited by IvorMog; 06/01/19 04:53 PM.
