I'm hoping this is the right location for this question. 2.5 sitting on 33's, at 60-65mph I started to smell burnt rubber. Slowed down, the smell went away. I stopped and checked my fluids just to rule out. Put my hand on the whole drivetrain underneath. Nothing was untouchablly hot. My 2.5 has 193k on it, my first jeep ever. My tires aren't rubbing, what could tge possibilities be for the smell?