Since my Passport is a little over a year old I decided to check the spare tire air pressure. Once I got it out it was at 47psi so I aired it to the recommended 60psi. But here's the issue. The wing nut that holds the tire in place was screwed in so tight I had to use a channel lock to loosen it. There was no way I could loosen it by hand. Upon replacing the tire, I found that the wing nut must be tightened down completely to avoid the possibility of the tire rattling when driving over a large bump or other extremely uneven road surface. To tighten it down completely, once again I could not do it by hand but used a pair of pliers. The pliers are now kept in the under floor storage bin.