Get RV rated tires not truck tires. The size of a wider tire will not help the steering or handling. That is done through having front end suspension and control components that are not worn out. A loose control arm will still be a problem not matter what width the tires are. Then most wider tires are lower as the 80 v the 70 v the 60 v the 40 v the 30 just get you lower the ground. Plus the wheel is also designed for the tire, and will not work with some wide tire sizes. Make sure the sway bar bushings are replaced with neoprene as rubber ones don't last long and are softer. Shocks and spring and air bags if you have them all need to be of high quality for best ride. The wheel bearings also need to be checked for flat spots and the damage they may have done to the spindle is the scored it. Then the steering box may be shot too. If it's the wider look you want, don't go there, as your vehicle was designed for a specific tire size and rating for the suspension and road clearance and level of the front to back stance. Of course the rear suspension may also be incorrect due to sagging spring and sway bar bushings and shocks being worn out.
