Enkei EKM3 18x7.5 5x100 45mm offset 72.6 Bore Diameter Hyper Silver Wheel - 442-875-8045HSEKM3 Sizes 17 & 18 Inch Hyper Silver or Gunmetal Spec E Inspected SPEC E All Enkei wheels are engineered to pass rigorous testing. In fact, Enkei established its own test standard called Spec E, which is tougher than JWL requirements. Enkeis Spec E test setting requires a higher drop point in the impact test and 20% more cycles for the rotary bending fatigue and dynamic radial fatigue tests than JWL standards. The Spec E represents Enkeis confidence