Skateboard wheel manufacturers introduce that skateboard wheels are divided into size, soft and hard. The most typical of large size is the road wheel. The faster the sliding speed, the better the endurance; the higher the hardness is the double rocker wheel, which has good resistance to pressure and friction. It is suitable for playing flat-land fancy moves; the softer wheels are 87A, suitable for rough ground, and can be used for hillside downhill. The wheels of skateboards are generally made of polyurethane, which is a chemical synthetic agent. According to the composition, there are four types of wheels: soft, hard, and large.
The most typical wheel with large volume is the road wheel. The diameter of the road wheel is 62 mm. The larger the wheel diameter means the faster the sliding speed. And the endurance of the road wheel is particularly good, it can glide for a long distance without losing speed, so the user will save more effort.
The high hardness is the double rocker wheels, which are suitable for playing some tricks, but not suitable for transportation, because if the wheels are too hard, they will not be able to pass the obstacles of the road smoothly. The softer wheels are the 87A wheels. The softer the wheels are, the more suitable they are for rough ground. The characteristic of this kind of wheels is that they can be used for downhill slopes. Generally better wheels have both of these two properties. They have both very good elasticity and a certain degree of hardness. Such wheels are not only fast, but can also perform some technical actions.