alright, see the thing is, i'm 15 and my jeep is all stock, and it has the 3.07 gear ratio. so the way it is i don't wanna go over 30. and my dad said as long as it's in his name he's not changing the ring and pinions. and ill turn 18 in 3 years. so for right now, i have to run 30's. once i turn 18, and it gets a few more miles on it, ill lift it, change ring and pinions and all that.