Dartin for Divorce
Before you blow off using the 2002 town car donut spare, hear me out. I have one of those 15x6 steelies like your light purple one. Got it from my boneyard to use as a spare thinking the same thing as you. Damn thing sits so high in the spare tire well without even a tire mounted on it, that you cannot mount the spare tire cover board and put the trunk mat down and have it all lie flat. The original standard wheels on these cars were a SBP 14"x5" rim. With the rubber sidewall bulge, that put em at a width of 5&1/2" at the sidewall bulge.
The 2002 town car donut spare is the same bolt pattern as the mopar big bolt pattern, will clear the disc brakes, is an aluminum rim for light weight, and fits perfectly flat in the spare well. This will allow the spare tire cover board and trunk mat to sit flat against the trunk floor. The town car temp spare measures 25" in tire diameter, and 5&1/2" in width at the sidewall bulge. I bought 2 of em out of my local boneyard. One for each barracuda. They ran me $10 each and neither was ever mounted on the car. Both had brand new tread on them. The 25" diameter would correspond with a 225/60R15 which is also 25" diameter.