A spare tire mount for the rear of a motor vehicle has a first outer support frame with a second, inner support frame nested inside and releasably connected to the first frame. Both frames extend laterally across the back of the vehicle and extend upward at an angle. Both frames rotate about a vertical joint at the rear bumper so the frames rotate toward and away from the vehicle. The second frame holds the spare tire and rotates about a horizontal axis. A wire rope winds around a reel on the first frame with the rope connected to the second frame to raise and lower the second frame and tire as they rotate about the first horizontal axis—toward and away from the first frame and ground. The reel is rotated by a worm screw and worm wheel.