I don't think you're going to find a "hinged" carrier rated for a 40. The Evo is rated and maxed out at 37".
I've also had the Evo body mount and friends with the genright. I would use other of those for a 40.
I had the Evo hinged, then wanted to be bad ass, so put on the corner armor and body mount carrier with a 37". However the jeep is my daily driver and I was doing a lot of camping at the time. I was getting tired of messing with the pins and needing a cargo strap to hold the carrier open if I wasn't level, etc so I sold it and bought another Evo hinged carrier (shouldn't have sold the first one). I'm currently on 35's so it's perfect. If I were to run 40's, I'd go back to the body mount for sure.