How is it possible then to build a rear wheel?

Maybe these recommendations are more about best build principals as opposed to true failure potentials?

Most manufactures seriously pad their limits in general to cover all the possible STUPID out there. Maybe this is a byproduct of that?

Seriously, none of the rims or hubs we work with have any kind of limit. I'm a bit surprised to see marque brands posting limits of any kind.

Quick question: Do those limits very with yaw angles? And if the user experiences negative drag does it affect spoke tension limits?

Curious mind and all.