It all kind of depends on what exact tire/wheel combo you're looking at, but generally speaking trailer wheels have a zero offset so the middle of the tire is basically directly over where you mount it to the hub. If you can tell me what exact combos you're looking at I can answer your question a little more directly.
The 2 combos I saw that match your descriptions are # AM3H290 and # AM3H200 which both have a zero offset. view full answer...