Im finally going to put some better tires on my 2004 Ext. Cab silverado Z71. I have a set of keys i have to put on from rough country, but i have a few questions about these tires. First, what is the biggest tire i can run on my stock 16" alloy rims? I was thinking maybe 295/70/16? I would like to get as close to 33" as possible on the stock rim. Second, how do these tires perform on highways? Anybody have them that has a true review of them? I drive about 60 miles round trip to and from work each day, but i live in the midwest and like to go out on the trail with a friend of mine that owns a jeep. Just curious if these would do the trick? Any help is greatly appreciated!