urm so what on earth did I do wrong. Just taken the utterly knackered dunlop trailmax off the rear after about 2500 miles

struggled like hell to break the bead.
2 days later refitted a k60 with ease :/
Plenty of tyre soap. Long tyre leavers,,, didnt actually take too much persuading
70 psi, one side popper onto the bead. stuck it in the back of the van back from the petrol station and on the way heard a pop as the other side popped in..
miracle tyre soap maybe?? sorry to hear the trouble everyones had. thats usually me!
+ went for a quick spin down a greenlane and it handled beautifully!