We own a Provan Tiger on a 2008 Chevy chassis with 17" rims. This vehicle is at GVW, with 6,000 lb on the rear axle and 4,000 lb on the front. We've had 3 tread delaminations on our current set of Nitto Terra Grappler 285/70/17 with about 20k on them. Thankfully, none of the treads completely...