I'm a tire technichian by profession, and do plenty of trucks (many lifted with oversize tires).
I feel the best light truck tires made in the truck industry now, are Bf goodrich (and my entire shop would agree with this), particularly the all-terrain. I run these on my own truck, and lots of freinds have ran them. They do well offroad..Don't plan on getting stuck unless far exceeding the limits. My truck has 245/75/16's and has only gotten stuck once and that was probably becuase I didn't have enough speed and just started digging once it got real deep (I was over the tires). I have found they tend to clog up very quick unless you use some horsepower (which luckily my big tank has), but its still the best non purpose offroad tire I have used so far. The best part about these tires, however, is how awesome they are on road. I know a few guys who have got as much as 100k on these with lighter vehicles and a religious rotation scheadule. They handle extremely well. My 7000lb truck is smooth as day at 100mph (once you get over the unloaded 3/4 ton bounce that is).
For a true mud tire, The mud terrain from Bfg is one of the better choices. As far as being a road tire, it sucks...but its better then most other true mud tires I have ever seen. They tend to chop pretty quick but they ARE mud tires and not really designed for it. I would say the MT is the best all around true mud tire you can get. Save bias plys for vehicles with the sole purpose of wheeling.
We also sell lots of private label stuff that isnt too bad. I think one of our biggest selling truck tires is the Trail mark M&S (Private label from goodyear I believe). I haven't seen these in action, but people say they aren't bad at all. They look aggressive, and they are cheap (like 100$ a pop). Don't expect great highway mileage, though.
as far as some confusion with tire sizing, ill give some approximations on common lt metric tire sizes to the high flotation sizing you guys refer to used on fullsizes.
235/85/16 = 32/8.5/16
245/75/16 = 31/9.50/16
265/75/16 = 32/10.50/16
285/75/16 = 33/11/16
Anything past this is a bit of a gamble fitting on a stock IFS Gm fullsize vehicle. Some guys can run skinny 36's with wierd rims and lots of tweaking, some cant run more then a 285.
305/75/16 = 33/11.5/16
315/75/16 = 35/12/16
These are the most common sizes. There are some other oddballs you might see but pretty much up to 33 inches is your limit without mods. A good 33 with a few other offroad necessity's will get you through more then a daily driver has business getting through anyway.
