You only need to know one thing about buying a rack for your bicycle tour: don’t get a cheap one.
Racks take a beating on a bike tour. The rack has to carry a heavy load and it is constantly exposed to the bumps and jostles of riding. This strain means that cheap racks are likely to break relatively quickly.
In our latest article on the basics of bike touring, we talk about what to look for in a rack and a few models that we recommend.
Read more in Choosing Racks For Bicycle Touring