I think I have my tires picked out. Now I'm looking for the best size regarding gear ratio. With the 3:55, would I be better of with a 275/70r18, a 285/65r18, or 295/65r18. I understand the fuel mileage drop regarding going up in size, and thats not as much concern as the power loss out of the motor, meaning the get up and go! I drive pretty easy, but I like to have that power when needed. So how tall and wide can I go before significant power loss is noted? Any help or experience with this would be greatly appreciated.