What is the difference in compound and size?Updated a year ago

Compound

The compound is the hardness of urethane in street wheels. The higher the number, the harder the compound/durometer.

• Lower durometer wheel = softer wheel and adds more grip (e.g. 74a, 107mm ABEC/Evolve)
• Higher durometer wheel = harder/stronger wheel, slides more easily and it best for aggressive riding (i.e. 83a, 85mm Purple Caguama)

Size

The size affects the top speed and torque.

• Smaller wheel = lower speed + faster acceleration/torque (e.g. 85mm Caguama)
• Larger wheel = higher speed + slower acceleration/torque (e.g. 107mm ABEC/Evolve)

Be sure to read what is the difference in drive gears?