So how many of us have had the spare tire carrier wire rot out and have the tire drop from under the truck while going down the road. Happened twice to me! Once while snowplowing my own parking lot And no one saw it, another time while going over a set of rail road tracks and the wheel sped by me and went up a person’s driveway. I sheepishly pulled in and retrieved it and the neighbor across the street was my stone mason and he saw it and came to see if I needed help! It was embarrassing. 
