I was thinking of getting some kind of spare wheel for my 182 for longer journeys (not sure I want to rely on the repair foam). A full anthracite alloy + tyre is kind of expensive (and bulky) and wondered if anyone else has bought a spare, maybe a space saver? If so, where did you get it and how much did you pay? Presume I'd need to get the right size (how do I find that out - is it just based on the normal wheel/tyre size?).