how high would you blow the rear tyre up to seat the bead. I have had it up to 50 psi with plenty of lube on the rim. Tried it a couple of times and one side popped but the other side is still reluctant to pop out. deflated the tyre and worked some more lube on the rim/tyre interface and blew it up to 50 psi again. Left it for a few days and it is still not seated. Whats your experience, should I take it to the garage and pump it up some more ?

Take the valve core out and take it to a garage or service station. Plenty of lube and get the air in there quick, you need to shock it on.

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http://advrider.com/forums/showthread.php?t=988891 'South Dakota to South America'

That's sounds good, I took the valve core out at first but only used my 12v pump, so i'll give that a go thanks

Blow it up to 20 psi and take it for a ride, on return re inflate to normal pressure.

That had occurred to me as well, thanks that's a couple of options for me to try.

Most difficult wheel i have ever had to get to bead out or break off .
Pumped it to 70 psi and no go .
In the end i took wheel off deflated it and left it beside stove for the night and used loads of lube .Then it beaded out at 60 psi
A spin partially beaded does work also probablly heats the tyre a bit .
There seems to be no easy way its just a difficult wheel to bead on orbreak the bead ,almost like you have the wrong tyre size .