What Otto said. Another problem with positive offset is interference with things like steering arms, etc. If you put wider wheels on, even if the offset is the same as stock, for every inch of additional width, it puts the inside of the wheel 1/2 inch closer to the steering arms, etc. That can cause the tires to rub when making a sharp turn.
Here's a page from the 1951 Vehicle Info Kit that shows Tire and wheel info.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
