go to kwik fit they managed to do mine no probs but it did take a hour and a half to get the f**ker back off the ramps. best take some bits of wood with you to wedge under the flap ramps at the end.
Bens right (as ever) about it not fitting although as i say kwik fit managed to do mine without saying a word, the tyres are up around half way into the archs and they slipped the doofers on there somehow. possibly depends how friendly they are i guess.
Motorway told me to f**k off, there equipment was the same as kwikfits as far as i could see.