ok folks, i need an answer to this! my wife's copen wheels have had it, they are bubbling with corrosion especially round about the valves and when rust problems fixed next week, they will really let car down; ive had a quote for £200 to refurb three of the wheels, (i have one new one); i keep seeing ads for new alloys with tyres £299 etc etc; 15" wheels aren't uncommon, but our tyre sizes are so im not going to get that deal especially as i have four almost new tyres on the car, so can i just go and buy any set of 15" inch alloys and have my tyres fitted to them, or am i asking for problems?? i'd really like some guidance on this, thanks dave