This tire step is so helpful for reaching things on the roof rack. We use it to help us secure things on the roof rack. The assembly instructions were awful, but we figured it out. The quality is excellent, and it's so convenient. We also purchased the Original Moki Door Step and we were going to decide on which one to keep, but it turns out they are both great. We can't really use a tire step on the front tires, as that is past the roof rack, so that's where the Door Step comes in handy, so we kept both.