Why not change both wheels at the same time? A complete wheel set in the 27.5” size would look good on your mountain bike and the next bicycle tour through the forest with the mountain bike can get started. Because every cyclist is different, we have gear shifts of every type in our selection- a gear shift or a hub gear. So you can reach the needed speed. Wide tires with 27.5” wheels as well as an aggressive anti-lock disc brake proves itself in tricky situations and shows them the cold bike-shoulder.