“Fairly high speed about 65mph, I had the rear tire on my 650 BSA suddenly go flat. It had picked up a nail and as soon as it lost some pressure it spun inside the rim and torn the valve stem out. The rear end went to the left and then snapped back the right and dumped on the pavement.”
It’s a good reason to have rim locks on your wire wheels.
I was looking over my motorcycle last night and I noticed there had some unusual play when I picked the rear wheel up while the bike on a center stand.
Not a good sign... I rebuilt the linkage just a few months ago.