Skinnier "Truck" summer Tires are always better on the fuel. If you can find the goofball types that are real skinny with thick tread (similar to some trailers) you get even better.
My old diesel suburban lost about 3 mpg going to big winter tires, in my oppinion not worth it. After that I stuck to skinny tires.
Last edited by rmay635703; 09-25-2008 at 11:33 PM..
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