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  1. #1

    Default Tires VS Gas milage

    I have a 1995 1500 4x4. Is there a way to figure out your gas milage when you put bigger tires on without having to hook it up to a computer? I have 36's on my truck so I know my milage is way off from what it says. I think it's a 1/10 of a mile off for every mile but I'm not sure.
    Amber- Indiana

    1995 Chevy 1500 4X4

  2. #2
    Master Mechanic bigdaddy77084's Avatar
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    Have someone follow you. Then just do the math. What a p.i.t.a.
    95 tahoe 2dr 4x4 200,000+ miles

  3. #3
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    murdog94's Avatar
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    Hey Redneckgirl this should help you. it is a sticky in the tires and wheels section... the Miata one should be what you are looking for..

    http://www.gmtruckclub.com/forum/showthread.php?t=8018
    Mike

    Currently

    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

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  4. #4

    Default

    If you have a gps like a garmin or tom tom, these will tell you your true mileage while you are driving also.

    Bobby - North Carolina
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  5. #5
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    Enkeiavalanche's Avatar
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    With the bigger tires and wheels. There is also more mass for your motor to turn. You are going to see a decress in braking and MPG's.. If you were getting about 14 mpg's before I would say your down to about 12 now...AVG..
    08 Z71 Avalanche Mods to date: K&N CAI,Hellwig Swaybars and End Links, Corsa Sport Exhaust, Superchips Programer,IPCW LOF & 3rd brake light and tails, AMI Gas door,Show Hooks and Door locks, Enkei Wheels, with Pirelli tires, StreetScene Bowties, Grant Steering wheel,Muth signal mirrors,SSBC Big Brake kit,Huskyliner Mug gards,Floor mats and Hood shield, McGard Lug nuts and locks, Bedrug, Cervini's Ram Air hood,35watt HID Fog lights, Sylvania bulbs all around ZXE's Highs and Lows, WhiteNight Back up lights,Sirius and HD Radio, SnugTop sitting on deck now Got a Softopper on now,Tempress Boat Hatches.... New Bilstein shocks are on... New Mods coming soon..... X

  6. #6
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    Enkeiavalanche's Avatar
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    With the bigger tires and wheels. There is also more mass for your motor to turn. You are going to see a decress in braking and MPG's.. If you were getting about 14 mpg's before I would say your down to about 12 now...AVG..

  7. #7

    Default

    A crude way of measuring would be to determine how many gallons of fuel your tank holds, fill up your fuel tank, keep track of your mileage as you drive until you have a half of tank of gas, then do the calculations. i.e. you drive 100 miles on 5 gallons, you will get 20 miles per gallon. Definitely not 100% accurate, but you can get a rough guesstimate if you don't own a gps .
    2003 Silverado 2500HD 6.0L Vortec V8
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  8. #8
    Sr. Mechanic sc99z71's Avatar
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    Default

    Use a tires size calculator and figure out what percentage your speedo and odo are off. Then after a full tank of fuel take your mileage and add whatever percent the calculator gave you and that should be real close to your actual miles driven. Then do the simple miles per gallon math and your done.
    99 Silverado 1500 Z71
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