Re: 255/65r 18
They would for sure fit, but there's no reason to use that size. There are many available in the stock size. Don't limit yourself to local dealers.
The Firestone Destination LE2 come in OE size. Check tirerack and discounttiredirect.com for options and reviews.
2014 Durango Limited AWD in Granite: Premium Package, 2nd Row Captain Chairs, 2nd row Console.