JNC wheels are a low pressure cast wheels. Low pressure casting uses positive pressure to move the molten aluminum into the mold quicker and achieve a finished product that has improved mechanical properties (more dense) over a gravity cast wheel. Low-pressure casting has a slightly higher production cost over gravity casting. Low pressure is the most common process approved for aluminum wheels sold to the O.E.M. market. Low-pressure cast wheels offer a good value for the aftermarket as well. Center Bore 73.1MM Lip Size 2-4 Inch Size 15x815x916x816x917x918x1018x9 Bolt Patern 4x100/4x114.35x114.3 Offset +20mm+25mm+15mm+30mm