F250 and up, max 60 square feet frontal area
I was shocked when this was pointed out to me today. According to Ford's owners manuals for the F250, F350, etc. there is a frontal area limitation. I'll quote from the 2013 manual, 3rd printing (I ...
Forum Discussion
rexlion wrote:The spec is meaningless unless it is tied to a specific speed.
First off, it says "Do not exceed" 60 sq ft, but second, it says what to expect if you do exceed it. Is Ford winking at those who tow trailers larger than 7.5' x 8'? I mean, there are some humongously tall 5ers out there!
For example, if the 60 sq ft applies at a speed of 75 mph, approximately the same amount of horsepower would be required to overcome aerodynamic drag with a frontal area of 92 sq ft and a speed of 65 mph.
Ron
