Excursion - King of SUVs2000 - 2005 Ford Excursion
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When you use a taller tire it throws the speedo off a bit showing lower mileage. I think taller tires may help on the highway some but hurt in the city.
That is part of it.
You are going faster now, which increases air resistance.
You are going farther than the odometer says, thus mpg "seems" lower.
Probably uses more fuel to get moving since effective gearing has changed, but it would be offset by better hiway economy from that new effective gearing.
Your city vs. Hiway ratio determines the net effect based on your driving.
Sent from my Sprint PC36100 using IB AutoGroup
'05 EB Excursion 2wd 6.0 3.73/LS Mich LTX M/S2, Diesel Kleen (gray bottle), FICM w/atlas40 from Ed, RAS, Read Head Steering, scangaugeII w/Blendmount, '08+ Tow Mirrors, Magnefine PS filter, SPAtechnique Dual-Gauge (FP & Volt), Blue Spring, Air Lift 1000, Interior Dome Override, DieselSite Coolant Filter, BPD Oil & EGR coolers, Rancho RS9000, Hellwig, Diehard Platinum x2
best we ever seen on lie o meter was 22 or so, highway.
Is the muffler delete helping for mpg any? i never seen a reponse on that.
00 7.3 auto ex 4x4 stock tire size and stock wheels. stock height.
00EX7.3 powerstop rotors, coated calipers, pads, 6637 filter, FRX, HPX, cobalt gauges, riff raff boots/plenum inserts. alternator 1/30/2012 199226 miles. oil filter, pre&fuel filter 9/2014 226221 Miles.Marines know how to use their bayonets. Army bayonets may as well be paper-weights. [Navy Times; November 1994
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