4. Tires

What this is made of

• 4(a). Tire and vehicle manufacturer's specifications
• 4(b). Check tire pressure, inflate a tire, and check the spare
• 4(c). Wheel alignment
• 4(d). The lateral-wear bar indicator
• 4(e). Disposing of old tires

Where this step comes from

1. Automotive Maintenance Merit Badge Requirements (Merit Badge Hub, last modified 2025-12-31), Requirement 4