Up for sale here on Ebay. Biggest 29er tire made. Its huge and still new. Here:
http://www.ebay.com/itm/New-WTB-Dissent-29-x-2-5-MTB-tire-New-bike-take-off-Biggest-29er-tire-made-/160717353345?pt=Cycling_Parts_Accessories&hash=item256b803181#ht_500wt_1413
Cheers,
Brycer1968