2007 Chevrolet Avalanche

Tires and Wheels problem
2007 Chevy Avalanche V8 Four Wheel Drive Automatic 10633 miles

My avalanche had a lift put on it prior to me buying it. I had the tires and wheels changed once I purchased it. My questions is: If I needed an alignment after I changed the wheels from a positive offset to a negative offset? My tires are worn out after only six months because the alignment was bad.
August 25, 2008.

Yes, it changes the angles of the tires when the wheel offset is changed.

Aug 26, 2008.