The 10-spoke wheels, 5.5 inches at the rear and 3.5 inches at the front, made of lightweight black-finished aluminium, help reduce overall bike weight and also make sure that limitation of unsprung weight (i.e. the mass of all the components between the suspension and the road surface - wheels, tyres, brake calipers and discs etc.) is achieved. When these parts rotate they would, if too heavy, affect the handling characteristics of the bike on account of the gyroscopic effect.