i get around 18mpg on the freeway with 4.10's and 315 70r17's. thats only going 65. towing a 20ft flatbed with 4 quads on it, i get around 15mpg. going 60-65 mph.
empty going 70-75 i get around 16mpg. that couple mph extra may get you there faster, but its actually what kills your mpg.
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2004.5 Dodge Ram 3500 4x4 4 door, Short bed, Auto, 315X70 R17 Hankook RF10's, Recon Cab lights.
Silencer MIA, S&B CAI, 5" Expandit TBE, DiPricol (EGT, Boost, Pyro, RP, FP), Edge J/A, Air Dog DF-165
Studs, muffler delete, and
CARLI SUSPENSION on the way.