I measured my stock 2018 SCREW before my build and it was just under 87" of width from outside tire to outside tire. Factory wheels are 17" x 8.5" with +34 mm offset.
After moving to 8.5" wide wheels with +6 mm offsets (total of 2.2" wider than factory), the measurement is right at 89" at the bulge of the tire. (see pic)
If you stick with factory wheel widths and offsets, you will be able to squeeze it in. However, there is not a lot of room for error!