Ford Mustang Forum - View Single Post - Need help on tire size choices for new 20x8.5 & 20x10 wheels ordered
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post #3 of (permalink) Old 03-16-2016
Pete Grimaldi
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With the front 8.5" wheel you can't go too wide. I'm guessing a 255/40/20 may be as far as you can go. The rear at 10" you will be able to run at least a 295/35/20. As JBert has suggested, AM must have a wheel/tire package that you can refer to.

Pete

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