turfcat75,
You can run any brand 265-75R16's on stock offset wheels. If you go to aftermarket aluminum wheels, they are offset less or more (depending how you look at it) . These will cause some types of square sidewall tires (BFG AT's) to hit the bottom rear of your front wheel well flare when you are carrying a plow. Another good idea for snowplowing is 235-85R16's on any rim type. They are tall and skinny and ideal for plowing snow. Some people have put big 285-75R16's and crank up the bars, but they will definately hit with plow weight on.
Hope this helps.