[412usa]

Kevin, What a shame after such a wait! I have found that Bristol wheel nuts
are threaded such that they are a very tight fit on the studs. This will
often confound air driven guns into thinking they are tight. However, the
strange thing is that if they were a tight fit on the threads, how did they
back themselves off by driving? Very strange. I have had a similar problem
with my Subaru after a garage swapped my car to snow tires but I stopped
before the wheels fell off. The lesson. Always use a torque wrench to
finally tighten wheel nuts.

Peter