These flaps are 12" wide and will mount up to the edge of your fender. With oversized tires I would recommend an offset bracket. This will move the flap further away from the tire and you can get a little extra coverage outside of the wheel well. You can find them here, https://www.sharptruck.com/truck-hardware-universal-mud-flap-brackets. The 1" offset should be enough to make sure the tires do not rub.
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Admin answered on 4/23/2018