I agree - you should be in good shape. See my build thread for some pics of the same wheel setup (17x8.5, 25mm, 6x5.5 adapters), but I don't have the body lift so I went with 255/75/17. The only tight spot I have is in the front fenderwell when the back of the tire is turned in toward the engine (pics in the thread). The clearance between the tire and firewall/footwell is pretty tight. The body lift SHOULD take care of that, but I would test it out in a ditch before bombing over boulder while steering at full lock
2005 Trailblazer EXT LT V8 Lifted
Build ThreadThere are 10 types of people in this world, those who understand binary and those who don't.