Automotive Service Excellence (ASE) Brakes Certification Practice Exam 2025 – Comprehensive All-in-One Guide to Exam Success!

Frictionless bearings are least likely used to reduce disc brake squeal. While they serve a significant purpose in reducing friction and enhancing the smooth operation of various mechanical components, they are not specifically designed or intended to address the issue of brake noise. Brake squeal typically arises due to vibrations of the brake components, and while smoother operation can reduce noise indirectly, it is not the primary method for tackling squeal.

The other options play a more direct role in noise reduction. Shims, for instance, are often made from materials specifically designed to absorb vibrations and can be inserted between the brake pad and the caliper, effectively dampening sound. Bendable tangs are also used to help align and secure the brake pads, which can minimize movement and subsequent noise generation. Spacers can create necessary gaps to align components and further reduce vibrations that lead to squeal. Thus, these components are more closely linked to managing and mitigating brake noise issues compared to frictionless bearings.