Using these BC Racing BR series coilovers is quite straightforward. First, adjust the ride height according to your preference. You can use the easy - access adjustment knobs to do this. Make sure to set the ride height to match how you drive and what performance you expect. Also, use the 30 levels of damping adjustment to fine - tune the compression and rebound based on different driving conditions. When it comes to maintenance, check the coilovers regularly for any signs of damage or leaks. Since they are completely rebuildable, if you notice any issues, you can purchase individual parts to fix them. Remember, these are custom - ordered products, so once you place an order, it'll take up to 8+ weeks for them to be shipped. And if you choose the optional rear extenders, they'll give you more flexibility in adjusting the damping without the hassle of removing your rear seat every time.