Wheel wobble on 26inch wheels?

[ccorona01]

Hello, I just purchased 26 inch wheels on 295/30/26 tires and there is wheel wobble that I can feel in my truck (2012 Tahoe) and shakes my steering wheel. I have had the tires balanced and rotated twice to eliminate the possibility of "over run" on the tires. I was wondering if any other people have oversized wheels and tires on their Tahoe and how they fixed the problem or is there gonna be a little bit of shake due to the low profile tire..

Thanks in advance!