All I can say is that I can't wait until it rains so I can test these things out under some different conditions. So far I am very impressed...I switched from Michelin M+S 265/70R16 to the Revo LT265/75R16 (C Load Range) today and they are awesome. Going from the Michelins (a very comfortable on-road tire) I was worried about ride and noise, especially going to a LT C-load tires, but these things are smooth as silk. I can only tell I'm on an AT tire at around 10-15 mph, any speed over that (75+ on the freeway) and they're quiet and smooth. Also, they look tough.
Oh, and one more thing for those considering these: Costco had the best price I could find, but of course they won't install the 265/75's because they aren't an "approved" size for the tundra. However, the local Firestone dealer was happy to match their price (which surprised me considering it's a membership warehouse), and gave me their road hazard for $40 instead of $75 (Which covers a little more than Costco's does, and being in construction I unfortuantely need it). Not a bad deal, plus if I have any problems with the tires I think I have a little better chance dealing with Firestone as their availability of these is very good. Hope this helps some of you out there, and thanks for all the reviews here that led me to these Revos!