What is the recommended tire air pressure relative to the manufacturer's maximum?

• A. At maximum
• B. 2 psi above minimum
• C. 5 psi below maximum
• D. 10 psi below maximum

Answer: (C)

Five psi below the maximum recommended by the tire manufacturer is the best balance for safety and performance when carrying gear. This margin keeps the tire firm enough to prevent blowouts and maintain handling, while still allowing some give to absorb bumps and heat buildup during a ride. Riding at the maximum leaves little room for expansion as the tire heats, which can make the ride harsher, reduce traction on rough surfaces, and increase the chance of damage under load. Going much lower (for example, ten psi below) can waste efficiency, worsen handling, and increase rolling resistance, especially with gear on the bike. So five psi below maximum provides a practical, real-world compromise for public safety cycling.