If you are a DIY'er you can make a better stronger mount for around $30. I spanned a 3" x 3" x 3/16" piece of angle iron ( 5'-11 1/4" long) across the inside lip if the I-beam frame, drill 2- holes in it for 1/2" x 6" bolts to hold the spare. If you don't have a welder the ends can be held inplace with a #10 tek screw (pre-drill the lower frame lip). Use a racket strap across the frame and under the tire to lower if needed.