How to Tell When Brake Discs Need Replacement
1 Answers
There is no mandatory timeframe for replacing brake discs, as it depends on the owner's usage patterns, driving frequency, and habits. Below are detailed indicators for brake disc replacement: 1. Check brake pad thickness: The maximum wear limit for brake discs is 2mm. When reaching this limit, replacement is necessary. However, most drivers don't strictly follow this standard in practice. If brake pads require frequent replacement, more attention should be paid to disc thickness since brake pads and discs wear against each other. 2. Listen for sounds: If you hear metallic scraping noises (like iron rubbing) during light braking, the brake pads must be replaced immediately. This indicates the pad's wear indicators are directly contacting the disc, meaning the pads are severely worn. In such cases, the discs should also be inspected as they're often already damaged. Simply replacing pads may not eliminate the noise, and disc replacement might be needed. 3. Notice braking changes: This method suits experienced drivers familiar with their vehicle. As pads wear thin, you'll notice longer pedal travel, delayed braking response, weaker stopping power, or a feeling of inadequate braking - all signs requiring brake inspection. Additionally, brake fluid should be checked as it requires periodic replacement to maintain performance.
