The final wheel had one wheel nut that wasn't going to budge, so a bit more pressure and I now have a very pretzeled looking wheel nut, they are not steel but lightweight alloy and occassionally get very tight.
So now I have to work out some way of getting a shapeless wheel nut off the stud

Any ideas

I do have an air chisel that came with the air compressor I acquired earlier in the year. Do I use that to split the nut??
Thanks for any sensible suggestions.