Quote Originally Posted by Petos View Post
I have the big 20'' inch tires so the spare is pretty much useles..
Having a full-size spare is the most obvious and sure solution, but:
1. not easy to find exactly the same tyre and rim given we only have just one month to go..

You don't need the exact same tire, just one that is of the same diameter.
There are several calculators on line that allow you to compare the diameter of sifferent size tires, try: http://www.1010tires.com/TireSizeCalculator.asp

My summer skins are 33x12.50x20" & my winters are 285/75x16", but both are roughly 33" diameter, so my 285/75x16" spare will work for either set.
Also, I got a used Honda Passport rim from a salvage yard for my spare.