Would you recommend I practiced rolling an arch on some piece of crap before I do my own car, or is it that easy I could just start straight away on my own car?
Looking for the stretch alright, will try a few 195/45's so and see which have the nicest thread pattern, now we're getting into detail
I'd use the sikaflex to stick the plastic arches to the actual body panel?
I was thinking of buying the machine, seeing that no body shop in Cork has one I could easily rent it out to people for their own use, or do it for them, hopefully that way it would pay for itself then, just a thought. £80 a corner

did they call a rape crisis center afterwards, I'd feel sore after paying that much! Thanks for all the help lewy, I'd be up the creek without a clue without all this.
Also, are your arches standard or G60? I can never tell the difference

@Mew: If you do find where those tools were let me know, might be able to save a few quid!
Cheers,
Alan