A tyre which can achieve high mileage is an asset because a longer lifespan leads to lower costs. The mileage attained by motorcycle tyres and in particular that by the rear wheels of performance bikes cannot be measured in the same way as that of car or truck tyres. Because the motorcyles themselves weigh comparatively less they are able to accelerate faster and during this acceleration the rear tyre slips. This slipping leads to wear on the tyres. A pillion passenger whose weight is mainly placed on the rear tyre helps to prolong the life of the tyre. The rear wheel is pressed onto the road with more force, thereby reducing the amount of slipping. The tyre therefore lasts longer.