I test fit some 35s, 34.82 inch tires to be exact, and they fit. As per Westcot Design video it does contact the crash bars on the inboard aft of the wheel well but can easily be removed. This fit was without a lift. Only one of the tires came in so they weren't installed. The picture is of the test fit on the left front.
I also tried the underside spare. It did not initially fit. You can push the front onto the brackets that keep it from the panhard first and it then contacts against the trailer harness bracket and the recovery hook on the right side. They are both removable. I think it may fit if those are removed and installed once cleared and at low pressure. I'll update that status once I have the tires.
All this is on the original wheels.
I also tried the underside spare. It did not initially fit. You can push the front onto the brackets that keep it from the panhard first and it then contacts against the trailer harness bracket and the recovery hook on the right side. They are both removable. I think it may fit if those are removed and installed once cleared and at low pressure. I'll update that status once I have the tires.
All this is on the original wheels.