First mpg report after going to 32in tires - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 07-21-2008
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First mpg report after going to 32in tires

Well last night I filled up the first tank after I upgraded to my 32's. Most of this tank was city driving and usually 3mile trip at a time and usually running cold. Would barely warm up by the time I got to work. I also took a 40 mile trip on the hwy. Which was the only time I was on it. The rest was all city. Here is what I got.

284 miles
15.16 gallons filled up
18.7 mpg avg
That's with 93 octane tq program installed

When I was running my 246/75/16 I was avg 18.1mpg. So as you can see it went up some with the 32's and I do believe it is because my truck is running in a better rpm range for the city now. I drove it exactly the same for the last few months which is about 5 fill ups.

So for anyone wondering if they should upgrade to bigger tires I WOULD! As long as you have a programmer installed you mpg will be good.
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Old 07-21-2008
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284... dang thats good, im doin about 200 with my 33s... bleh
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Old 07-21-2008
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Yea wow, 284! I'm lucky to get 230 out of a FULL tank
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Old 07-21-2008
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Either of you guys running a programmer? It makes a world of difference!
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Old 07-21-2008
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after i went to 32's i averaged at least 2 mpg more than stock
as in the rpms im about 2 to 300 less than the stock 235/75r15's

the 4.10 are nice for out of the hole but suck on the highway unless u got the tire for them


o ya if your wondering i average 24 mpg weekly
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Old 07-21-2008
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Im getting around 210 to 230/240 depending on how I drive,I have a straight piped dumped, 35's, and 4:56's

But I am about to get a spintech super pro street! Yay for more backpressure haha
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Old 07-21-2008
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what about running 31"s on the stock 3.0L with 4:10 ratio?
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Old 07-21-2008
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my last tank with 33's and 4:10's i went 310 miles and 14.9 gallons
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Old 07-21-2008
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^ ya right! im callin you BLUFF
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Old 07-21-2008
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Quote:
Originally Posted by 07SPORT View Post
what about running 31"s on the stock 3.0L with 4:10 ratio?
if i had the money i would run the 4:10s with my 31"s. i am currently running them with the 3:73s and getting roughly 15 mpg
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Old 07-21-2008
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didn't really notice a change when i put my tuner in my truck. avg 17mpg or so with a stock 3.0, tuner, 31s and 4.10s
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Old 07-21-2008
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Quote:
Originally Posted by rideabikenick View Post
^ ya right! im callin you BLUFF
You have to remember that Rangers came with about 4 or 5 different tank sizes. His "bluff" may be true, as I can squeeze 350 out of my truck with a 21 gallon tank.

Mike, did you adjust your speedo, too? Just curious...
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Old 07-21-2008
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Quote:
Originally Posted by rideabikenick View Post
^ ya right! im callin you BLUFF
he gets around 20mpg usually its called manual trans. he drives like a old man (no joke) and the truck is in better condition now then it was new..

i have seen and driven his truck and its true i didnt even believe it till i saw it do it in person..
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Old 07-21-2008
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man you guys dont get much better than me!

i can get 250ish miles out of my tank with 37s!! but it takes about 18 gallons to filler up
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Old 07-21-2008
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Arent the miles off now though because you upgraded to bigger tires?
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Old 07-21-2008
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no a tuner fixes this
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Old 07-21-2008
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Ah I see.
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Old 07-21-2008
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My speedo is off and it says for my 19.5 gallon tank that I'm getting 300+ for a full tank.

Brenton
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Old 07-21-2008
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Well before i upgraded my tires i was getting about 16-18 mpg and now that im running on 32's my mpg has dropped to 10mpg on my last four tanks of gas! but yeah i don't do a lot of driving so im cool with it and i have the stock gears and no programmer (i would have one but they don't make one for my year!)
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Old 07-21-2008
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call my bluff all you want. Stone has seen it. It is consistency of shifting that really helps. I shift at 3k from 1-2, 2-3 and 3-4 and anytime i am 40+mph i use 5th. my speedo is off 11% so last tank...279.2(trip meter mileage)X1.11(for gears and tires)=309.91(corrected mileage) 309.91/14.9=20.80

my dad gets 17-18 with his OHV4.0 5-Spd and 3.55's
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Old 07-21-2008
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Justin, how do you figure out your numbers for the speedo and tires. I want to do this.
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Old 07-21-2008
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http://www.miata.net/garage/tirecalc.html if you dont like math this will give you the ratio
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Old 07-21-2008
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Quote:
Originally Posted by Jimmeh View Post
You have to remember that Rangers came with about 4 or 5 different tank sizes. His "bluff" may be true, as I can squeeze 350 out of my truck with a 21 gallon tank.

Mike, did you adjust your speedo, too? Just curious...
I'm running a programmer so it adjust it when I put my gearing and tire size in.
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Old 07-21-2008
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What is the stock tire size on an 02 XLT.
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Old 07-21-2008
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lord of war. when you regear, if your speedo is read off of your ABS ring, the speedo will not be affected by gear change because it is on the ring gear. so you divide your door sticker tire height by your new tire height and there ya go
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