Today is an absolutely beautiful day for working outside. Mid 40's and mostly sunny. So I'm outside getting a few hours on the tractor doing final mowing, moving trailers and wagons around to their winter storage spots, etc. As I am driving along, I make a right turn, uphill and I feel the rear wheels start to slip, so I push down on the differential lock and make it to the top of the ditch. Hmmmmm.....why is the left side of the tractor so low? I look down and the darn tire has popped the bead and is loose on the rim! DAMN! Jack it up and un-bolt it, roll it over to the shop and luckily I was able to get the bead seated and put air back in it. Obviously I was a little low on air in that tire when I started the day.