[00BLZRMyWay]

I had the same noise/vibration with my 2000 Blazer. I can't say this is the exact problem you've got, but check it out. I also only have a 30" x 9.5" tire and it started off as just a little noise and rub, then got loud. It was only when I turned left. If you look at the wheel well when the tire is turned all the way to right, there may be a little (or big) dent in the wheel well pushing out in some place that will hit the tire. Compare your left and right front wheel wells. If it's sticking out, there's your problem. Too fix this, I just took the wheel off and took a rubber mallet to it. Can't gaurantee this is your problem, or if it is, I can't gaurantee this will help.