The R90 regulations refer to a set of standards established by the European Union for the approval of replacement brake pads and linings. These regulations ensure that aftermarket products meet safety and performance criteria similar to original equipment manufacturer (OEM) parts. Compliance with R90 helps maintain vehicle safety and performance, providing consumers with confidence in the quality of replacement parts. Under the R90 regulations, manufacturers must conduct tests to verify that their brake components perform effectively under various conditions. This includes assessments of braking efficiency, noise levels, and wear rates. By adhering to these standards, manufacturers contribute to safer roads and improved vehicle reliability.