30 or 31's and mileage

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ZIGGY K
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30 or 31's and mileage

Post by ZIGGY K »

Is there a big difference in mileage loss going from stock rubber to larger dia. tires ?? I am going with a 30 " Pirelli Scorpion A/T; act 29.6" dia. or a 31" Pro Comp A/T ;act 30.2" . Also does the weight of the tire influence the mileage ,because the pro comp's are 41 pounds... THANKS...
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jeff024
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Post by jeff024 »

your mpg wont change much but your speedo will be off by a few mph
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Post by F9K9 »

The Scorpions will be pretty much dead on if your rig is like mine. My tires are 29.7 inches and I adjusted........adjusted, and adjusted with my HPPIII and it was always off according to two diffrent GPS units, I run. I put the setting for tire size back to stock and my speedo was dead on :D

ANY time you move more weight your miles per gallon will decrease as jeff024 advised.
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Post by killian96ss »

I'm running 31" MT/R's with 3.73 gears and get 19-21 mpg city/hwy, but I do have other mods as well.

Steve
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Post by ZIGGY K »

Any regrets choosing 31's ?? and are these c.c. your daily drivers??
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killian96ss
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Post by killian96ss »

ZIGGY K wrote:Any regrets choosing 31's ?? and are these c.c. your daily drivers??
No regrets, and yes this is my daily driver. :D 90% Pavement 10% Off Road

Steve
Last edited by killian96ss on Sun Aug 21, 2005 7:28 pm, edited 1 time in total.
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Post by AZS10Crew »

Your mileage technically goes down because your odometer is off. Mine is off by about 5% or so with 31's.
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Post by chumley »

Mine's off .15 per mile roughly. I checked it against the mile markers on the PA turnpike recently. I'm getting over 20 mpg highway w/33's. :wink:
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Post by ZIGGY K »

Hey , thanks for the help !! :D With a 2" B.L. and cut rear front fenders, I think I'll go with the 31'S. I just didn't know if mileage would decrease that much to be an issue ,ya know , with the price of fuel now adays :shock: :shock: !!!! THANKS
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Post by ace »

Man I wish I got the mileage you guys get. I average between 16 and 17 all the time. I have the 3.42 gears, stock tires, and I do mostly highway driving with a few stop and go's. I did notice running the A/C has the biggest effect on my mileage though.
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Post by barch97 »

Some tips that have worked for me. In order of ascending cost.

use your cruise control.
keep tach below 2000rpm.
add some more air to your tires :mrgreen:
airbox mod.
change your fuel filter.
change your plug wires.
get a tonnaue cover.


I've got 3.73 gears and steel wheels and average 18-19 mpg
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