It's about $2k for a set four 245/70R19.5 traction tires mounted and balanced on Vision rims. My only additional cost was the purchase of heavier shocks since the OEM ones did not dampen the extra wheel weight as well as when I had the lighter OEM wheels. My 275/70R18E tire is the same height as my current wheels and used as a spare. If I do get a flat on a 19.5, I can use the spare on the front and go for miles without worry. Fords can carry up to a 33" tire in the OEM carrier which equates to my 245's. I would hope most full sized trucks can carry the 225 in the OEM location. On a long trip I can carry additional spares in my trailer but have not felt a need to do so - The 19.5's are much thicker and ward off road hazards better.