The Gobi ladder does NOT bolt on. It's just brackets that "grip" the door. I don't mind drilling or cutting on my rig, as you can see from the shower of sparks in the pictures above ... however, I don't like it when I have to remove something that's been drilled. Thus my concern over the spare tire clearance with the ladder.This is a dumb question for you vets I KNOW. But is the real gobi ladder a direct bolt on part? DO you have to drill holes for that one as well? It would make me more hesitant if you did. Love the look of that thing though! What about clearence for the ladder with bigger tires?