Clutch Broken problems of the 2009 Nissan Xterra

Premature clutch failure in 2nd generation Nissan Xterra. Clutch burnt out at under 5000 miles without warning while driving in snow in 4wd lo. I have 20 years manual driving experience, and have never burned out a clutch. Dealership refused to pay for it because it is a wear item. Many others have had same problem - some with transmission disengaging without any notice which could be very dangerous on a highway. Many have described clutch as "exploded" or "totally shredded" when taken apart. We believe this is because Nissan dumped the 350 z clutch, which is made for a lightweight sports car, into a heavy and powerful 4wd. This clutch is underpowered for the 265 hp Xterra. Nissan refuses to acknowledge this problem, yet it continues to happen. More info and details of the frequency of this failure can be found at edmunds. Com under the Nissan Xterra clutch problem post. Nissan has been totally inconsistent in its partial, complete, or lack of reimbursed for this problem.