There are lots of threads on replacing tires and going to other brands (BFG KO, Nitto Ridge Grappler, may General Grabber ATx) and different sizes (275/65, 305/55, 295/60, etc.)
Along the way, I found this video made last year from someone who appears credible. Be warned, it is 15 minutes long.
Along the way, I found this video made last year from someone who appears credible. Be warned, it is 15 minutes long.