I have looked and looked for replacement tires for my 2005 F-350 6.0 Diesel and there are no good tires in that size. What did ford due to there 2005 F-350? Has anyone else out there found any 275x70Rx18 replacements? I wanted to put a taller and wider tire on it but I cant find anything.

 

You're not alone. Better yet, the factory tire options are all absolutely useless in snow or ice. (You ought to try to plow with them.) Fortunately, BF Goodrich will be coming out with some new sizes shortly. Check with your local BFG dealer.