
My Owner's Manual for the 2011 Buick Lacrosse says, "Do not use chains. get stuck on some mountain passes. Luckily, these chains are only 9mm thick, which in my case allowed them to fill the 1/2 inch gap between the bar and the rack body. Because this play is very small, it's also important that the chains aren't slack, and the automatic tensioning system on this model does a very good job of keeping the chain taut on the bar. A few tips for installing and removing chain: 1) Installing a chain, especially for the first time, can be tricky, so install it at home first. You wouldn't want your first try on a cold, wet road. There are also some good YouTube videos (Thule CG9) to help you understand the process. 2) They cannot be installed if any part of them is confused. Since they will tangle when you remove them from the container, take some time to make sure they are not twisted or tangled. 3) I had more trouble removing them than installing them because you have to reach for the tire to unhook the yellow wire. hitch and I couldn't find it without crawling under the car. So mark where it is installed relative to the hooks on the front of the tire or mark the tire. When removing the chains, you preferably want to position the car so that the clutch is on top of the tire. Once you learn how to attach/remove these chains you will be glad you spent the extra money on this top. linear product. Much luck