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 15x818x8.518x9.517x817x9 Bolt Patern 4x1005x114.34x100/4x114.35x100/5x114.3 Offset +25mm+0mm+30mm+20mm