I just came across this rad little tent, and had to give it some blog love. While it’s designed for motorcycle touring, if you break up the weight between a couple people, it would be pretty awesome for bike touring as well. It packs down relatively small, and weighs 13 pounds. 13 pounds is a bit of weight, 6 1/2 per person if you’re sharing, but if you are touring in inclement weather or are willing to carry a little bit more for the luxury of being able to stand up in your tent, it might be just the thing.
This is the original version, and it looks like they’ve improved pretty significantly in the Series II version, which adds more usable vestibules on both ends.
They’re definitely not cheap tents, but they’re on par with comparable high-end backpacking tents, and you can’t beat a purpose-built shelter.