Guide

Replace a motorcycle air filter every 6,000–12,000 miles; for dirt bikes, inspect each ride and swap when dirty—the manual and dust level decide.

For bike spark plug changes, replace every 8,000–16,000 km or 12–24 months, sooner if hard starts, rough idle, poor economy, or worn/dark electrodes.

After a bike fall, get safe, check head and neck, stop bleeding, and seek care for severe pain, confusion, vomiting, numbness, or nonstop bleeding.

Replace bike tyres when tread is shallow, sidewalls crack, punctures rise, or after 2,000–5,000 road miles; age limits are typically ~5–7 years.

Change bike engine oil every 3,000–6,000 miles (or per the owner’s manual), sooner for dusty, hot, short-trip, or high-rpm riding.

Use the front brake for strong, straight stops and the rear brake for speed trimming, balance, and control, blending both to match grip and terrain.

Most bike collisions cluster in urban areas—especially at intersections and driveways during turning or crossing movements.

Toddlers can start with balance bikes around 18–24 months, with pedal bikes often ready between ages 4 and 7, depending on skills and safety.

Babies can ride in a bike trailer from about 12 months, once they sit well unsupported, wear a proper helmet, and ride on smooth, low-speed routes.

Most kids are ready to ride a bike between ages 3–6, depending on balance, coordination, fit, and safe practice with a proper helmet.