You can go taller, but imo, it wouldnt look right. It woul dhave that fat sidewal/tall tire look. Unless you want it.
But since you want fat and squaty, i'd stay around a 28" tire and lower the truck a little and get some wider tires in the rear, it would look good. Go too much taller and when you lower it, you'll rub (if you lower it for that squaty look)
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-Bobby-
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