185 is plenty wide. 155 would fit a 5" or 5.5" wide wheel, as I have been running that size tire on both those wheels widths, albeit in the 13" variety, for years. I'm not sure how wide your donut is but it might be worth just buying a set of steelies off Craigslist. Find out your lug pattern and do some searching.
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He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
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