If you are looking for a skateboard wheel that offers grip and comfort, then the 99A wheel is the best choice. This wheel is considered to be soft and has an average hardness rating. The softness of this wheel makes it ideal for riding on rough surfaces because it absorbs vibrations and impacts well. Most beginners prefer to use these wheels as they provide more stability while riding. Hard wheels do not absorb vibration as well as soft ones. So if you want to ride fast on rough surfaces like concrete or asphalt, you need a hard wheel with high rebound capabilities such as 95A or 85A (hardness rating).