New Rear Tyre Fitted with tube.

P1120895 Chunder tyre 2.3 fitted as it was all I had. Problem see more.
I had this heavy Tyre at home but could not fit it tubeless so I fitted it with a tube before leaving for Tassie.
On the first ride at the Mersey the tyre came off the rim and I assuming I had not beaded it properly.
The problem can be seen in the header photo.