Some 2015-2018 Shelby GT350 and GT350R vehicles may require brake service or repairs to be performed. The vehicles should not have the brake rotors machined when servicing the brake system. Replacement of brake rotors is the only acceptable service of brake rotors on GT350 and GT350R vehicles. GT350 and GT350R vehicles are equipped with a brake system designed for high speed and superior fade resistance. Occasional brake squeal and elevated levels of brake dust may occur. This is normal and does not affect brake system performance. Refer to the Workshop Manual (WSM) Section 206-00 and the Mustang Owner's Manual and the Shelby GT350 Owner's Manual Supplement for further information.