Using this Line Comp 30 rear wheel is easy. Just install it on your 27.5 - inch mountain bike following the standard procedures. When riding, you can adjust the tire pressure according to your needs and the trail conditions. Lower pressure gives better grip but be careful on rough terrains as it might increase the risk of pinch flats. As for maintenance, regularly check the hub for smooth rotation and make sure the spokes are tightened properly. Clean the wheel after each muddy ride to prevent dirt and grime from affecting its performance. Keep an eye on the tire tread and replace it when it gets too worn out. This will help your wheel last longer and keep you riding smoothly on the trails.