DS3 space saver size

[oldwelshdude]

I've just bought a 2012 DS3 Dsport and it doesn't have a spare wheel, and I hate that

Now it has 17" alloys, and I want to get a space saver spare for it.

Can someone let me know what size I need to get. I assume it will be 16", but what tyre size too?

Thanks in advance

[Lucifer]

I got a 2014 PEUGEOT 207 15" SPACE SAVER SPARE WHEEL 125/80/15 and seems to work ok, no binding on brakes and fits in the shallow space on mine due to ad-blue tank