I was able to use a 285-75R16 tire/rim combination after installing this kit. It was really a difficult task, but I knew that once I saw the instructions online before ordering. After procrastinating several months, the box it came in was scuffed from rolling around the back seat of my truck, and I got myself motivated and prepared to be without truck for several hours. One thing that added to delaying in putting it in was the instruction to deal with the rear lift first, then install this kit. After taking great care in making sure everything was level in the rear, I proceeded to install this kit. It took some muscle to get the A-arm low enough to squeeze the enhanced strut package low enough to match the bolts. Aside from that, the only issue I had was actually getting my torque wrench onto the final nuts and torquing them to spec - the top nuts are so close to the body I had to put the socket on the nuts first, and get a running start with the wrench head to be able to use a torque wrench to torque the bolts.