Aero 50 Series Silver Powdercoat roll-formed race wheels stand out in the pits and on the track. 50 Series wheels are ideally priced for the weekend racer and feature a 2 piece steel construction, knife-edged safety bead humps, maximum-sized bead seats, lower runout, and an HSLA material D-window center. In addition to a corrosion resistant finish, the 15 x 7 50 series wheels are DOT- approved while select 15 x 8 wheels are approved for IMCA sanctioned races.