- Tire tread depth ruler: measure brake pad thickness and tire tread depth without removing the wheel. Compatible with most cars; enables quick on-vehicle checks for braking performance. brake pad detection pen - Brake pad thickness gauge: detects brake pad thickness and tread depth quickly and accurately. Helps plan replacement timing to prevent braking issues. brake pad detection pen - Brake pad thickness measurement tool: practical and time-saving tool that helps identify worn pads before they pose a danger. Supports safer driving. brake pad detection pen - Tire tread depth gauge: high-precision and easy-to-read; intuitive and convenient for regular checks. brake pad detection pen Use scenarios - Before long trips or adverse weather, perform quick checks of brake pad wear and tire tread to ensure safe braking. - During routine DIY maintenance, quickly assess wear without wheel removal to decide if service is needed. - For fleet maintenance, monitor wear across multiple vehicles to optimize scheduling and reduce downtime.