Below is a detailed guide on tire pressure specifications for vintage push bikes, compiled from authoritative sources:

I. Standard Tire Pressure Range

Universal Standards

Recommended tire pressure for four-wheel vintage push bikes: 2.0-2.5bar (200-250kPa)

Recommended tire pressure for three-wheel vintage push bikes: 2.0bar (200kPa)

Special Vehicle Types

High-pressure tire models: Can reach 3.0-3.5bar, but must strictly adhere to manufacturer specifications

II. Seasonal Adjustment Recommendations

Summer Adjustments

For every 10°C increase in temperature, tire pressure rises by ~0.1bar - recommend keeping 0.1-0.2bar below standard value

Example: Standard 2.5bar may be adjusted to 2.3bar

Winter Adjustments

For every 10°C temperature drop, tire pressure decreases by ~0.1bar - recommend keeping 0.1-0.2bar above standard value

III. Usage Scenario Adjustments

Short-distance Use

Maintain standard tire pressure

Long-distance Travel

Recommend 10% below standard value (e.g. 2.5bar→2.3bar) to reduce high-speed friction heat risks

IV. Inspection & Maintenance

Check Frequency

Check pressure at least monthly, increase frequency during seasonal transitions

Measurement Methods

Use tire gauge when tires are cold (measure after 2 hours post-ride)

V. Precautions

Safety Thresholds

Minimum ≥2.0bar, maximum ≤3.5bar - exceeding may cause blowouts or wear

Tire Condition Effects

New tires may use upper limit pressure, older tires require more frequent checks

Always prioritize vehicle manual or tire sidewall specifications - different brands/models may vary.