Fortunately, this time around, Jeep seems to have really done it right. Off-road capability is increased with better ground clearance, larger wheels and tires (long demanded), enhanced Dana front and rear solid axles, available next-generation Command-Trac® and Rock-Trac™ transfer cases, new electric axle lockers, and an electronic disconnecting front sway bar that greatly increases wheel travel over rocks or other irregular surfaces. Meanwhile, on-road performance, always a problem for Wranglers, has been improved with a 100% stiffer frame (in bending), a two inch longer wheelbase, 3 and a half inch wider track, lower spring rates, advanced shock tuning, and increased jounce and rebound travel.
http://www.allpar.com/model/jeep/wrangler.html
http://www.allpar.com/model/jeep/wrangler.html