Yeah...I was running BFG MT KM2 37x12.5x17s on the stock rims and it fit perfect; both the tire and rim made contact with the carrier.
37 with stock rim:
I've since moved to Rockstars and BFG MT KM2 37x12.5x18s. The shallower backspacing on the RSes moves the tire out further. The rim makes contact with the carrier but the tire does not...I meant to snap a pic this morning but forgot.