Using the Thule Premium ProRide 598 is a breeze. First, make sure your car has compatible roof racks. Then, place the bike rack on the roof and attach it according to the pre - assembled, tool - free interface. Lift your bike up and put it on the rack. The frame holder and wheel tray will help position it correctly. Use the torque limiter dial to secure the bike frame, and you'll see a clear sign when it's correctly mounted. Fix the wheels in the wheel holders and use the diagonal quick - release wheel straps to hold them firmly. When you need to switch the rack to the other side of the car, just follow the easy - to - use interface. For safety, always use the included locks to secure your bike and the rack. As for maintenance, regularly check the torque limiter dial, claw pads, and wheel straps for any signs of wear. Keep them clean and dry, and store the rack in a cool, dry place when not in use.