22" wheels vs gas mileage

[StillShockedIwantaFORD]

I'm buying my 1st Diesel this weekend. A 2011 F250 but it its coming with ugly wheels. I'm throwing a set of 22" Dick Cepec wheeels and toyo 10ply off road tires on it. I want it to look good, but still get practicle gas mileage.

Anyone running this combo..

[SuperCrutyPS]

A couple things to do.
One - Hand calculate your fuel mileage. You will need to know the difference of your stock height tires and the new ones (if there is any) Use this:
Tire size calculator
Enter your stock size and your new size. It will give you the difference in percentage. Bigger tires register less miles so you'll calculate your fuel mileage and then add the percentage difference.
Example: Your odometer says you drove 300 miles, you put in 20 gals of fuel. So, 300 / 20 = 15 mpg
There is, say 3.5% difference tire size, so...300 / 20 = 15 + 3.5% (.525) = 15.525 mpg
Two - Get a programmer that will allow you to adjust for tire size.

[StillShockedIwantaFORD]

Toyo 33" overall diameter open country at series 33x12.50x22. I like the mt series but don't know if its practical for a truck on the highway... No snow, no mud.