First of all, make sure the real size spare fits into the tire well. I had the third seat and bought a look-alike wheel (Try tirerack...they have some really close matches for under $140). Anyway, the anchor for the third seat and the little steal bits that stick out in the wheel well for tools kept my new spare from fitting. It's just a thought, but try taking one of your tires off and putting it in the wheel well before you attempt to buy one. My real size spare now that sits in the garage (16 inch swirl alloy) because it won't go in the wheel well, but I'm still happy to have it in case I have a flat...I'd put the donut on first, drive it home and then put the real size spare on until I can get the flat fixed. Hope this info helps you.