According to factory spec my alloy wheels are 7" wide at the beads, 16" diameter with a 31mm positive offset, meaning the wheel sets more inward from centerline when mounted to the flange. The custom wheels I am thinking of is 8" wide at the beads and is 16" diameter with "0" offset meaning the wheel will stick out approx 1 1/4" further from flange mount. To anyone's knowledge will the offset and wheel width difference cause a rub problem? Forgot to say that the factory tire size is 265/70R-16. I think the 4.8L engine took a slightly narrower wheel. I think that tire size was 245/70R-16.