Why buy John Deere replacement belts? Application-specific design

Comparison is of John Deere belts against comparable competitive belts (belts not manufactured by John Deere, but sold to fit the same equipment).

Resistance Rollover: Belts shown being misaligned (inches recorded at red line).

John Deere Advantage: Greater resistance to rollover on misaligned drives.

Strength: Belts shown being stretched and broken (pounds per square inch noted in black circle).

John Deere Advantage: More tensile strength for high horsepower demand.

Smooth Clutching:

John Deere Advantage: Lower coefficient of friction for smooth clutching (important during blade and clutch engagement and release).