I've just bought a used Q5 and unfortunately it doesn't have a spare wheel only the dreaded squirty foam so I'm keeping my eyes open on eBay etc.
However, I don't know if there is any flexibility between the wheels supplied for different models. I have 20 inch wheels fitted to my Q5 but cab I buy an 18 or 19 inch spare provided it has the correct profile tyre? Will any Audi 5 bolt spare fit the Q5?