do you have 7" or 8" wheels? if 7" then maybe a 9.5" or 10.5" tire would suit you better. if you have 8" wheels than you can easily mount up and run up through 12.5" tires. from a tj person's standpoint the issue with 12.5" wide tires on the stock wheels is more a problem with backspacing and not width - they just will rub without some version of a hub spacer. again, this is a tj guy's view - not sure how it'll affect the yj. make sure you put up some pics when you have it all together
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