99 Dodge Dakota

I have a 1999 Dodge Dakota 4 X 4 V6 that is killing me in gas. Is it possible to change rims and tires to be more fuel efficient and what is the minimum size or most efficient size I can install.
Thanks
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snipped-for-privacy@hotmail.com wrote:

http://www.tirerack.com/tires/tiretech/techpage.jsp?techid )
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