wider tire and traction

You may have to look at how much room do you have under the rear quarters. The wider the tire you can go, the more traction you can get, most of the time. Depends on the suspension set up. I run the M/T DOT slicks 28 x 13.50s at 12 PSI. They hook real good for me. i am running 12.00@113MPH with mufflers on.