I have had these T/G for 5 months and have liked them so far. Their not noisy on the road and I have had them in the fields and some mud and they did good. I have only put 2600 miles on them so I cant speak for how long there going to last. I did stay with a E-rated tire because I do haul a load occasionally.
http://www.duramaxdiesels.com/forum/showthread.php?t=47492
http://www.duramaxdiesels.com/forum/showthread.php?t=47492