I purchased two of these racks and they work well to hold up my tires. I give 4 out of 5 as the instructions are poor. For a notice installer like myself there was no instructions on the need to tightening all the bolts. There is also no tires diameter range in the book so you know what position to place the bars that hold up the tires. The directions on placing the brackets up all at once makes no sense if you are installing alone. I figured it out but it would have been nice to have better instructions.