Where does the full size 'spare' go?

i have had to replace my rear tire with a spare on the side of the road. best part my friend was driving the car, as he wanted to "test drive". oh and ya rainnnn damit. so i was lucky, i have 17inch rims n so on the angle in the front trunk went the damaged tire.

i also wanted to remove the front spare and buy the repair kit. well a great point was made, that his tire was ripped apart. this has happend to me in other cars where the repair kit would not solve anything. the last thing that i would want is to wait for a tow truck, can't justify calling someone to fix my blown tire.

so i guess i will have to keep my spare tire, cant lose the weight. guess when i buy 18inch rims im gonna have a problem, cause it seems like a rear 18 with 265 will not fit anywhere.

very odd, never thought of this ordeal