Bolt Pattern (PCD)

PCD stands for pitch circle diameter. Wheels must match the car's pattern exactly. Adapters exist but must be approved. Bolt pattern is often stamped on the back of the wheel, together with the centre bore. Wobble bolts that allow small pattern differences exist but must be approved. Many brands use the same pattern across models, but offset and bore can still differ.

Bolts on a matching pattern centre and clamp the wheel evenly.

A mismatched pattern can never be safely forced. Close sizes like 5x112 and 5x114.3 are not interchangeable.