I have never owned Otliebs, but I have owned simple top loaders with compression straps that didn't wobble or shimmy at all. There are a lot of things that cause shimmy including stuff like death grips on the handle bars. Never owned a really tank like bike so I know that isn't necessary, though it seems like it would be a good thing. The worst case of shimmy I had was when I weighed everything out so the the balance was perfect in each bag. Went away as soon as I ate my right side lunch...