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Hi, I wanted to share my experience with replacing the tire mobility kit with a doughnut spare tire in my Ford Fusion Hybrid SE 2014 (17 inch wheels) in particular what to look out for in case others are thinking of doing the same. I've included a lot of details for those like myself who do not know a lot about cars and are learning this stuff for the first time. I've sustained side wall damage several times on my Fusion. The tire mobility kit did not work for side wall damage and even ruined my tire pressure monitoring sensor on one occasion. I decided it was time to get a spare tire (which the car did not come with). Pricing The dealer I called (I am in California) was quoting the wheel for $207.95 (without the tire which they did not stock), jack $139, lug wrench $37 and foam insert $54. The tire can be purchased online for $158. Total $585.95. I called my local auto wreaker - they had the wheel and tire, jack, foam insert and wrench and quoted me $150 - $200. I have also seen the wheel and jack sold together and separately on eBay for a range of prices. Important information I did my research on this forum (thank you for the wonderful wealth of information) and looked at my friend's Fusion spare tire setup. Here are the important things to know if you decide to go the secondhand route: 1. The wheel you want to get will have CM5C-1015-CXA engraved on the wheel (the part number is CV6Z1015B but this is not printed anywhere on the wheel). 2. The tire on the wheel is Maxxis T125/80R16 3. I recommend getting the jack (which should have a slim metal stick that moves the jack up and down attached), the lug wrench and the foam insert (see pic from my friends car). The foam insert with all the parts will sit nicely inside the tire. 4. The Fusion comes with a lock nut holder (spindle) which holds down the foam insert. This spindle also works to hold down the spare tire and foam insert. 5. I recommend installing the doughnut onto your car before you buy if you have the time - that way you can test if the jack works and the tire fits. I am glad we did this as the first tire the auto wreaker gave us was 16 inches but did not have CM5C-1015-CXA engraved onto it and the tire was a Maxxis T145/80D16. It sat too high in the trunk (as it was wider) and the holes on the wheel would not line up with bolts on the car. It would have sucked to be out in the middle of nowhere 2 years later with a flat only to find it didn't fit and the tire wasn't returnable! Fit To fit the tire in the trunk 1. Lift up the trunk floor carpet/liner 2. Unscrew the spindle holding down the foam insert (which holds the tire mobility kit) 3. Remove the foam insert 4. Put down the newly purchased foam insert containing the jack and lug wrench (jack side up). The bottom of the foam should have a rectangle divot cut out which sits over a small rectangle of metal on the trunk floor. 5. Put the wheel in, outer edge up. The jack and insert should sit nicely inside the wheel 6. Screw the setup down with the spindle (see picture) 7. Replace the trunk floor carpet - it should sit flat. The tire mobility kit will not fit under the carpet but I keep it in the trunk as the compressor may come in handy. Here is a post from another member detailing their experience driving on the doughnut Here is post from another member discussing how to make the spare work for 18 inch wheels. Hope this helps!