Below is a detailed guide for inspecting the quality of elderly stroller tires, combining professional testing methods and daily observation points:

1. Visual Inspection

Tread Wear

Check if the tread groove depth is below 1.6mm (wear limit marker). If the tread is flush with the marker, replace immediately.

Inspect for uneven wear (e.g., inner/outer edge wear), which may indicate suspension system issues.

Cracks and Bulges

Replace if spiderweb cracks or deep cracks exceeding 2.5cm appear on tire sidewalls.

Bulges must be addressed immediately as they signal high-risk internal structural damage.

2. Functional Testing

Tire Pressure Monitoring

Use a tire pressure gauge to maintain inflation within manufacturer-recommended range ±5% (typically 2.3-2.5bar).

Abnormal pressure may cause irregular wear or blowout risks.

Debris Removal

Clear stones, nails, etc. from treads to prevent tire damage during operation.

3. Professional Testing Tools

Tread Depth Gauge

Measure groove depth; replace if below 1.6mm.

Dynamic Balance Test

Perform dynamic balancing (requires professional equipment) if vibration occurs during movement.

4. Production Date & Aging Assessment

Date Identification

Check DOT code's last four digits (e.g., "2525" means 25th week of 2025).

Replace tires older than 5 years even if visually intact.

Aging Characteristics

Rubber hardening/loss of elasticity (test via compression).

Replace aging valve stems showing air leakage.

5. Maintenance Recommendations

Monthly pressure and visual checks

Avoid sudden braking/turning to reduce abnormal wear.

Maintain 50% pressure during long-term storage to prevent deformation.

These methods enable comprehensive tire evaluation. Professional inspection every 5,000km or semi-annually is recommended.