Coil Spring Fatigue Signs: Sagging and Breakage Warnings

Fatigue Symptoms

• Lower ride height: Shortened free length
• One-side sag: Single spring fatigue tilts body
• Noise over bumps: Metal-to-metal bottoming
• Harsh ride: Spring lost its job

Pre-Breakage Warnings

Breaks usually at the last coil. Watch for: metallic "clank", sudden one-side drop, uneven tire wear.

Inspection

Measure corner heights (diff under 10mm); check springs for cracks, rust, flaking coating.

Replacement

Replace in axle pairs; check spring pads/seats. Huami supplies spring pads and seats.