OP, your question is almost impossible to answer without knowing exactly what brand and size tires you want to go with. Different brands of tires vary so widely that one wheel width and offset might be the proper answer for one type of tire but might rub horrendously with another tire with the same numbers on the sidewall.
When you are working with a case where 3 millimeters is the difference between 'flush' and 'rubs like crazy,' to get the best answer, you have to pick your tire choice first and then run your calculation.
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