The guy at my favorite off-road shop says that when I go from 33" to 35" tires I'll have to re-gear. He said that my jeep will be gutless. I didn't really notice anything between the factory 32"s and my true 33"s when I installed them. I have a 2011 JKUR with a six speed. I see tons of has JKs with 35"s, and I can't imagine they've all re-geared. Any advise would be appreciated.