I've had a three bike Thule hitch carrier in my garage for a few years that hasn't been used since I traded in my SUV for a Civic. A few weeks ago I decided to install a hitch on my car to use this rack again and the people who installed the hitch told me I needed this item. It does what it's supposed to do, namely stabilize. Without this strap, the bikes really bounce. The only problem is that there are no installation instructions included with the strap, which led to unnecessary frustration and concern that I bought the wrong strap for my luggage rack. But a quick YouTube search (how to use a tether to attach to a trailer bike rack) fixed the situation and I've been racing. I'm not going to try to describe the correct installation process here because the video in this case is really worth more than a hundred words, but it's really easy.
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