Installing them on my new 2016 tC. Works very well and comes with the hardware to install it. They sit very evenly, with me without a gap. There were no instructions in my package but he recommended I contact the retailer to get one. As for fitting, it is best to remove the rear wheels to do the correct installation. A screwdriver is all I used to place the rear fenders. Not sure if this is just my year for the car but there were two small indentations on the rear fenders that indicated where the bolts would be cut. Remember that you will drive them through two layers of plastic. As for the front, you can just spin the wheels for more access. In general I am very happy with them.
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