Tires measures
Each manufacture will specify the min and max rim width approved for a tire to be mounted on. These can be found on the spec sheets for the tires you plan on running. As a rule of thumb, the 265 is the max width tire you can run on 9" wide wheel; 285 on a 10" wheel.
You'll also need to pay attention to the offset and backspace of the wheel your buying to ensure that you won't rub on the inner wheel well or outer fender.



