I was looking at the specs on both of these tires and I see that they are not very different from eacother. the 32x11.50 is only .80" smaller than the 285 and the 285 is about .30" skinnier than the 32x11.50. So my main question here is that since the tires are sooo close then why is so much more necessary for the 285(higher lift,gears,gas mileage,etc..). Mainly it is highly recommended to regear with the 285 and not with the 32x11.50... does .80" really have that much effect. Also people with the 285's talk about a large gas mileage difference, and this is usually not a factor when people talk about getting the 32x11.50's. I was just wondering... 