What kind of roof top tent do you have?
It's the Inspired Overland standard tent mounted to the factory cross bars. It's very light at ~80 pounds and is ideal for one person. With the 200 sunroof shade closed, I don't hear any extra noise and don't feel the weight on the trail which is exactly what I wanted. I removed the mattress it came with and use an Exped Mega Mat which is the perfect length for it, and it leaves enough space on the side for my duffel bag, an Ecoflow River Pro battery pack, and an extra blanket. For the price point, I don't think it can be beat, but it is relatively small and minimalist and should not be compared to tents that are $5k and 200 pounds that fit a family of 4 plus the dog.