ENKEI Racing Series wheels combine MAT (Most Advanced Technology) with a rim forming spinning process, improving the material property and strength of the wheels. Rim-Rolled technology shapes the rim to improve material elongation without sacrificing the wheels hardness. Enkei's own “Spec-E” test standard is tougher than JWL requirements. 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. Spec-E standards combine with MAT to represent Enkei’s confidence in its technology and quality, and to provide a strong, lightweight option for enthusiasts on the track, and on the road.