track width questions

The only exact way to find out is to put the wheels and adapters on the actual car and then measure, but theoretically, if you take the offset out of the rim, it makes it 1/2 inch narrower per side (1 inch overall), then add the adaptor length (almost 1/2 inch per side) and you get the same width. There are many variables when determining track width changes from stock, and I have found that the only reliable way to see if something fits is to put the rims and tires on the truck