Highway tires
#2
ive seen good things with the kuhmo road venture a/t tires. two guys i work with have had them for about a year and they both drive about 200 miles a day for work and the tires still look almost new. lots of tread on them. if you dont need an a/t tire i know they have good all season tires. tirerack.com is the place to go to get them.
#4
How many miles do you have on your truck? my crappy dynapros were almost completely bald at just about 35,000 miles and i only drive on the highway too. I replaced mine with Firestone Destination A/T's. They are an excellent tire, nice and quiet on the road. i liked the more agressive tread on the A/t's but they also have them in an L/E series that is more suited for on road only driving
#5
You might look at Continental Cross Contact LX. I bought a set for summer driving, about 2/3 highway, and am real happy with them. They are quieter than the Michelins that came on mine and give a great ride. I don't know about mileage since I've only got about 3k miles on them, but they are rated highly on tirerack.