Buying a set of taller off-road tires for your 4x4 is like making a marriage work; it involves sometimes drastic changes, sacrifices, and commitment, along with constant care and maintenance. On the other hand, at least you won't have to remember anniversaries.
The first thing to keep in mind is that upgrading to taller truck tires means upgrading a number of other truck parts in your vehicle as well. Additional inches of vehicle clearance are needed for the truck tires to fit without rubbing against the vehicle fenders. Truck parts like a suspension lift, body lift, or a combination of both can provide those additional inches. For off-road purposes, a suspension lift is preferable for the increase in wheel travel ability, whereas a body lift simply allows for the fitment of larger offroad tires without any offroad performance enhancements.
Larger truck tires also mean that your vehicle will be working harder to tote additional weight, which can result in significant strain to your axles and shocks, and also alters the gear ratio set by the manufacturer.
To compensate for these changes, new ring and pinion gears and performance shocks (many complete lift kits typically include shocks) are strongly recommended. To counteract the additional weight and loss in performance, custom intakes, exhausts, computer chips, or any other performance-enhancing truck parts are also advised.
