Ford is testing a new variant of the mid-size Ranger truck, and we think this previews the return of the Tremor nameplate to the lineup.The truck rides on BFGoodrich All-Terrain T/A KO3 tires measuring 265/70R-17 and features rock rails with integrated side steps.We can also spot a fresh grille design, camouflage where the badges typically are, and a front skid plate.