Just wondering if any of you have put 285/70/17's on a Sierra or Silverado without a lift. I have turned my torsion bars and gained about 2 inches in the front leveling it with the back. My truck came stock with 245/70/17's but they were way too small. My truck is two wheel drive but its set up unique with torsion bars and crew cab bed on extended cab frame. It sets up about the same hieght as Z71 maybe a little higher. Im running 265/70/17 toyo open country at's right now and have enjoyed them. They do have a roar but not too loud.