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Re: Gas Mileage Drop With The Bigger Tires [Re: timd75] #1013492 11/24/10 11:43 PM
Joined: Mar 2002
Posts: 1,396
DennisThompson Offline
Body Damage is Cool
I checked mine with a GPS, with my 31s when my speedo reads 50 I am doing 58.9 MPH. When I calulate my MPGs I get about 19 MPGs, my speedo is about 18% off so when I add the miles I'm getting about 23 MPGs. When my Kia was stock I got about 24 to 25 MPGs and my wife got about 27 MPG. I don't think thats to bad of a drop for adding bigger tires, a lift, a heavy winch and a heavy rear bumper.

Dennis


95 Sportage, gone but not forgotten.
98 Jeep TJ, 4" Zone springs with RC Long arms, Ford 8.8", 4.56 gears & Detroit locker rear, D30, 4.56 & Detroit Trutrack front.
Re: Gas Mileage Drop With The Bigger Tires [Re: DennisThompson] #1013493 11/25/10 12:57 AM
Joined: Jul 2010
Posts: 120
timd75 Offline
Wheeler
I was wondering how accurate my equation was. I'm thinking it's probably pretty close. When my speedo reads 60, I'm doing 66. 20-21 mpg with 235's isn't too bad then, seeing I do 40 miles of my daily commute going 75-85mph. I would like to get a gps just to be sure, though.


99 Sportage 2Dr, 1.5" body lift, 30x9.50 Cooper M/T's, high lift, CB, custom bumpers, Warn manual hubs, Tom Tom GPS, snorkel.
99 Jeep Cherokee 3" lift, 31" mud terrains
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