Using this Yakima towball rack is a breeze. First, use the 'Just Click' system to attach it to your vehicle's 50mm tow ball. Place your bikes on the rack and secure them with the removable gripping arms. If you have an electric bike, you can use the drive - up ramp (sold separately). When you're done cycling, fold down the wheel tray and the whole rack to its compact size (L 75 cm x W 74 cm x H 28 cm) and store it in your boot. Remember to lock your bikes using the integrated lock system for safety. As for maintenance, regularly check the lock system and gripping arms for any signs of wear. Keep the rack clean and dry to prevent rusting. Also, make sure the tyres of your bikes are within the 100 mm (4') width limit.