Yeah, I never did get to use an RTI ramp. But if I flexed the suspension as far as it would go, I would lightly rub the 35' tires. Mostly on the front edge of the rear quarter panels, where you don't want any damage. I added a 1" block under the SkyJ leaf pack, but still had contact now and then. You really do need to see how the lift kit and tire combo fits your Bronco. When I pulled the kit and intsalled it on another 85 Bronco, he could easily clear 36x13 TSL Swampers. Most titres are not actual stated size when mounted, too.