A bucket of industrial strength acetone (not nailvarnish remover) is what you're after for tyre removal.
Cut the tyre, remove insert (you dont want the insert in the acetone as it ruins the insert, then plonk the wheel & tyre in a sealed bucket with 3 cm of acetone in the bottom. The vapours wil loosen the glue.
you can get the acetone here:
http://www.ecfibreglasssupplies.co.u...0-acetone.aspx
I can pick some up for you if you want, (they sell the sealed buckets aswell) as its near my house.
Alright chris could you get me some acetone if you dont mind please ???
How much would you recommend also ???
Cheers