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New Tires

Discussion in 'Wheels & Tires' started by Brunes, Aug 15, 2009.

  1. Aug 15, 2009 at 2:45 PM
    #1
    Brunes

    Brunes [OP] abides.

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    Inside: Tint, Wet Okole 1/2 Piped Red/Black Covers, Black Weathertech Digital Fit Mats, URD Short Throw w/ TWM Weighted Knob, USA Spec iPod adapter. Outside: 4300K Retro w/ Angel Eyes and Red Shrouds, 5000K Blazer Fog Light Retrofit, Debadge, Bed Locking Handle, Satin Black Rims Performance: TRD/Steigmeier Blower w/ 2.7 Pulley. 668 Injectors and 320 LPH AEM Fuel pump. URD UCON and 7th Injector. DTLT Headers, URD Y-Pipe, Wicked Flow Muffler. Suspension: Both: OME Shocks Front: 886X's and TC UCAs Rear: Dakars Armor: Relentless Front Bumper Relentless High Clearance Rear w/ Tire/Rotopax Swing Out Relentless Front, Mid, and TCase skids BAMF Diff Skid Recovery and Spares: Fullsize Spare Tire 2x2 gal Rotopax 1x1 gal Rotopax 1x1 gal Water Rotopax Warn 9.5XP-S Winch Hi-Lift Extreme 60" Ironman Off-Road Recovery Kit
    So I'm on my first full tank with the 285/70R17s I bought from Mick...and I want to make sure I'm correcting the math right.

    [​IMG] gives the numbers for the adjustment math...but do I need to change my ODO mileage by the 7% or the 6.6%??

    Thanks for idiot checking me!!
     
  2. Aug 15, 2009 at 5:20 PM
    #2
    johnecon2001

    johnecon2001 Well-Known Member

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    7%

    Mileage (x) 1.07 / gallons filled up = MPG
     
  3. Aug 15, 2009 at 7:07 PM
    #3
    devilsalmostfree

    devilsalmostfree Well-Known Member

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    how exactly r u getting the 7%? is it by the diameter difference?
     
  4. Aug 16, 2009 at 6:01 AM
    #4
    Brunes

    Brunes [OP] abides.

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    Vehicle:
    08 Red/Graphite and Satin Black
    Inside: Tint, Wet Okole 1/2 Piped Red/Black Covers, Black Weathertech Digital Fit Mats, URD Short Throw w/ TWM Weighted Knob, USA Spec iPod adapter. Outside: 4300K Retro w/ Angel Eyes and Red Shrouds, 5000K Blazer Fog Light Retrofit, Debadge, Bed Locking Handle, Satin Black Rims Performance: TRD/Steigmeier Blower w/ 2.7 Pulley. 668 Injectors and 320 LPH AEM Fuel pump. URD UCON and 7th Injector. DTLT Headers, URD Y-Pipe, Wicked Flow Muffler. Suspension: Both: OME Shocks Front: 886X's and TC UCAs Rear: Dakars Armor: Relentless Front Bumper Relentless High Clearance Rear w/ Tire/Rotopax Swing Out Relentless Front, Mid, and TCase skids BAMF Diff Skid Recovery and Spares: Fullsize Spare Tire 2x2 gal Rotopax 1x1 gal Rotopax 1x1 gal Water Rotopax Warn 9.5XP-S Winch Hi-Lift Extreme 60" Ironman Off-Road Recovery Kit
    7% is the amount that circumference of the tire changed. So for 1 revolution of the tire the new larger tires go 7% further than the old tires.

    I thought it was the 7% but I wasn't positive...Thanks for the back up john!!

    I'll post up what the new MPGs are when I get home.
     
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