Dang - how bad is the wear? I'd try to warranty it - the least you could do is get a 'no.'
Btw if you go to nissan-usa.com and look at the For Owners section (top right hand corner) you can get the warranty PDF for the 2007's. It may take some reading and searching but it is probably in there.
mine are falling apart were my right foot rests on the gas pedal but i know that is not something they would cover the stealership would say to move your foot but if it is under 12k i would deff try it shi* you never know what they will do these days let us know what they say though i will try it to hahahah!!!!!:futwice: