I hate to say it, but your gonna hate the larger tires. Its gonna be like pulling the spark plug out of 1 cylinder for performance. 6" is alot of lift, Im at 4" and can do alot. Even my 305/285-70/75 16's where a noticeable change in acceleration and fuel economy. I would look at treadwrites(retreads of At's, Muds etc) they much cheaper and if you dont like the size/weight youre not out as much as a full blown new tire