Absolutely it does. When I worked at Sears Auto, our assistant manager always complained that his Suburban pulled no matter who did the alignment. This particular individual was on the larger side and no-one had the heart to tell him why it pulled. One of our techs suggested that he sit in the driver's seat and hold the wheel where he wanted while the tech did the alignment. All of the measurements were way out of spec with him the the seat, but the alignment was absolutely perfect after.