TSB: Some 2013 ? 2022 model year Lexus vehicles equipped with a 2WD drivetrain and the F Sport package may exhibit a clicking noise from the front wheel area during slow (parking lot) speed turns. The clicking noise that can be heard during sharp turns is a normal condition for certain vehicles originally equipped with a lightweight two-piece aluminum rotor assembly. For customers who find this objectionable, an alternative steel rotor is available. Before performing the repair in this bulletin, it is recommended to review the visual differences of the steel rotor with the customer.