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Discussion Starter #1
I have the MILLION DOLLAR question..
I have a 2013 SV crew cab which does not get the gas mileage as advertised. I travel 158 miles to and from work daily which consumes a 1/2 tank of gas. Will increasing my tire size lower my RPM's which would increase my fuel economy? I am looking forward to any input. Thank you in advance.
 

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Subscribing to this thread as well. I came from a few sedans to my first truck and definitely miss the fuel economy, but I do understand it's a bigger and heavier vehicle. Curious to know if there are some things we can do to help get a bit of a higher gas mileage.
 

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There are a number of things you can do to increase MPG...but a few questions first. Do you (the OP) have a standard or an automatic transmission? Do you mostly do city driving or rural driving on open roads? The most obvious thing a person can do is slow down....really. I drive 60-65 MPH (rarely going over 2000 rpm. I also skip shift on flat ground. This is a technique used by truckers (me, retired) where I only use the gears I really need to get into 6th gear (I have the manual 6sp) as soon as possible without lugging the engine. I almost always shift (on flat ground) 1, 3, 5, to 6. I changed all fluids to synthetic when I first bought my truck(both differentials, transfer case, transmission) which will make a difference in colder climates. None of these things matter much if you wind the engine up through every gear and drive at 75mph. Also, if you do stop/go driving, try to anticipate what traffic will be doing in front of you. Give yourself a lot of room between yourself and the vehicle in front of you....gives you opportunities to keep rolling at lights rather than braking for lights.
 

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I have the MILLION DOLLAR question..
I have a 2013 SV crew cab which does not get the gas mileage as advertised. I travel 158 miles to and from work daily which consumes a 1/2 tank of gas. Will increasing my tire size lower my RPM's which would increase my fuel economy? I am looking forward to any input. Thank you in advance.
I didn't keep the stock SV tire size 265/70 long enough to build a comparison to the 265/75 (1 inch taller) to tell you if I'm any worse but I don't think I'm getting any better at all. My truck seems to get somewhere around 16.5 to 17.5 GPM according to the fuel receipts. Changing tire height too much either direction can throw you out of the engine's sweet spot...

I have the MILLION DOLLAR question..
I have a 2013 SV crew cab which does not get the gas mileage as advertised. I travel 158 miles to and from work daily which consumes a 1/2 tank of gas. Will increasing my tire size lower my RPM's which would increase my fuel economy? I am looking forward to any input. Thank you in advance.
Wow 41,000 miles a year just to and fro for work! You need an econo-box here....
 

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I am with the rest of these guys. Buy another car unless the frontier is what is used for work. LIke you need it to haul things when you get there. I did this exact thing. I was driving almost 40k miles a year between work and dropping my kid of to her mothers. I had a nice turbo charged infiniti that I racked miles up on. I needed to use 93 octane and got about 25mpg. I went and bought an almost bare bones VERSA brand new off the lot. The car was a whopping $11k. That car would get 40+mpg on the same routes and ran off of 87. I actually made money buying that vehicle. The gas savings pretty much paid the car payment and the car lasted years after it was paid off which was all profit!

Of course it did help that the Versa was super reliable. I sold it with the stock fluids (not oil), stock rear brakes, stock plugs etc with 205k miles. My brother has it now and is planning a trip from CT to NO this summer with it. Still blows Ice cold AC.
 

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Drive 55mph or less.

Run light, smooth tread tires. Look at the green X michliens. Do not go up a size. Maybe even go narrower if you can keep the same over diameter. You run 265/70r16 try 245/75r16.

Run high tire pressures.

Do you run an open bed? Get the deck lid spoiler. Camper shell? Take it off or get a slant back styled shell.

Make sure you have your front air dam in place.

Don't change out your air filter.

Get a rear axle with the higher gear ratio. I think you have a 3.133, there is a c200K with a 2.937

Get steel wheels and run a smooth hub cap.

Lower your truck.

Remove your antenna.

Remove your windshield wipers.

Fiber glass over your rear fender opening.

Do all of those and your will probably get to 25 mpg.

But realistically get a commuter.
 

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lease a VW or buy an old one for your commute.
 

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Discussion Starter #9 (Edited)
There are a number of things you can do to increase MPG...but a few questions first. Do you (the OP) have a standard or an automatic transmission? Do you mostly do city driving or rural driving on open roads? The most obvious thing a person can do is slow down....really. I drive 60-65 MPH (rarely going over 2000 rpm. I also skip shift on flat ground. This is a technique used by truckers (me, retired) where I only use the gears I really need to get into 6th gear (I have the manual 6sp) as soon as possible without lugging the engine. I almost always shift (on flat ground) 1, 3, 5, to 6. I changed all fluids to synthetic when I first bought my truck(both differentials, transfer case, transmission) which will make a difference in colder climates. None of these things matter much if you wind the engine up through every gear and drive at 75mph. Also, if you do stop/go driving, try to anticipate what traffic will be doing in front of you. Give yourself a lot of room between yourself and the vehicle in front of you....gives you opportunities to keep rolling at lights rather than braking for lights.
I have an automatic transmission.
Mostly highway miles
I performed a test on Monday, driving no faster than 65MPH on a full tank. I did slow down and accelerate a few time to go through tolls and pass a few people. I kept a steak 2000rpms and i still used a 1/4 tank of gas. Tire pressure is 33psi.
Too late for me to switch to synthetic.
My commute to work in the morning I almost never hit traffic, on the way home it a different story I ALWAYS HIT TRAFFIC. Stop and go for sometimes 11 miles.

Honestly, at 158 miles a day, you are going to be money ahead buying a throwaway beater small car. I drive 70 miles in a day and drive a little car that gets nearly double the MPG's my truck does. Purchase price aside, If I drive my beater twice a week, I pay for it's fuel and insurance.
I toyed with the idea of buying a beater or even a new car with at least 40mpg's but some of the projects I go on require a truck and I live in a 4 Season area, so areas flood and we get good amounts of snow.
 

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In any vehicle, with or without any mods, just don't use the brakes. Yeah, I know, so minimize using the brakes. Look ahead when you drive, anticipate. (That's also a good rule for safety, on or off the track, notice what is happening ahead.) Every time you step on the brakes, you're scrubbing off momentum that you just paid for with gas money.

Also, be smooth. You can go fast, you can accelerate moderately hard, but just try to be smooth. Pretend you're a limo driver looking for a big tip, or maybe hauling loose eggs in the bed.

Vic
 

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Discussion Starter #11
I didn't keep the stock SV tire size 265/70 long enough to build a comparison to the 265/75 (1 inch taller) to tell you if I'm any worse but I don't think I'm getting any better at all. My truck seems to get somewhere around 16.5 to 17.5 GPM according to the fuel receipts. Changing tire height too much either direction can throw you out of the engine's sweet spot...



Wow 41,000 miles a year just to and fro for work! You need an econo-box here....
Thanks for your input. So it looks like I am not the only one who does not get the advertised AVG MPG (21). Yeah 41,000/year. The good things is this project will be over next year so I am hoping to get closer to home
 

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... Too late for me to switch to synthetic....
Negative Ghostrider it is never TOO LATE to switch to synthetic... This is a wives tale that has hung on from the early days of synthetic when some seal and gasket materials did not play well with the new oils...
 

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I thought the max highway mpg was 21?

With city being 16 mpg max that averages to a combined 17-18 mpg...

With the cold here in ND, I avg 13-17 mpg depending on the lengths of my drive.
 

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Discussion Starter #14 (Edited)
I am with the rest of these guys. Buy another car unless the frontier is what is used for work. LIke you need it to haul things when you get there. I did this exact thing. I was driving almost 40k miles a year between work and dropping my kid of to her mothers. I had a nice turbo charged infiniti that I racked miles up on. I needed to use 93 octane and got about 25mpg. I went and bought an almost bare bones VERSA brand new off the lot. The car was a whopping $11k. That car would get 40+mpg on the same routes and ran off of 87. I actually made money buying that vehicle. The gas savings pretty much paid the car payment and the car lasted years after it was paid off which was all profit!

Of course it did help that the Versa was super reliable. I sold it with the stock fluids (not oil), stock rear brakes, stock plugs etc with 205k miles. My brother has it now and is planning a trip from CT to NO this summer with it. Still blows Ice cold AC.
I do not use the truck for work to haul anything. I need my truck to access most of the job sites I am on. One of the guys I work with suggested changing the fuel grade from 87 to 89. I did look at the Tesla SUV for a hot second but once I saw the price I almost fell off my chair.

I was not aware of that. I will definitely consider it.
 

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Thanks for your input. So it looks like I am not the only one who does not get the advertised AVG MPG (21). Yeah 41,000/year. The good things is this project will be over next year so I am hoping to get closer to home
Not many people can claim to get the advertised mileage. Reading the OBC while on the highway I see 19 avg and higher but the gas pump receipts tell a different story...
 

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Discussion Starter #16
Drive 55mph or less.

Run light, smooth tread tires. Look at the green X michliens. Do not go up a size. Maybe even go narrower if you can keep the same over diameter. You run 265/70r16 try 245/75r16.

Run high tire pressures.

Do you run an open bed? Get the deck lid spoiler. Camper shell? Take it off or get a slant back styled shell.

Make sure you have your front air dam in place.

Don't change out your air filter.

Get a rear axle with the higher gear ratio. I think you have a 3.133, there is a c200K with a 2.937

Get steel wheels and run a smooth hub cap.

Lower your truck.

Remove your antenna.

Remove your windshield wipers.

Fiber glass over your rear fender opening.

Do all of those and your will probably get to 25 mpg.

But realistically get a commuter.
I tried all the mods you suggested and i was getting some funny looks driving down the highway. Not to mention I couldnt listen to the radio nor clean my windshield during the rain. ::grin:: LOL.
I do have my bed covered with a BakFlip cover
 

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I thought the max highway mpg was 21?

With city being 16 mpg max that averages to a combined 17-18 mpg...

With the cold here in ND, I avg 13-17 mpg depending on the lengths of my drive.
I can get several MPG type readings from the OBC and I see 19 avg but this is at 77 to 78 MPH on the interstate, but when I stop to fill up the receipts tell me I'm at 16.5 to 17.5 more or less. But I do not try so accelerate slow and steady... When I'm on the road making my 650 mile work runs I'm getting it done ASAP...
 

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on the way home it a different story I ALWAYS HIT TRAFFIC. Stop and go for sometimes 11 miles.
You aren't going to get the advertised highway mileage with the driving conditions you are describing.

I can't remember the exact method they use to figure out EPA mileage (you can do an internet search and find it) but I believe the highway mileage on any given vehicle is calculated at something like 45-55 mph (and obviously with no stop and go traffic).
 

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I can get several MPG type readings from the OBC and I see 19 avg but this is at 77 to 78 MPH on the interstate, but when I stop to fill up the receipts tell me I'm at 16.5 to 17.5 more or less. But I do not try so accelerate slow and steady... When I'm on the road making my 650 mile work runs I'm getting it done ASAP...
On road trips, I have noticed a difference in MPG once you get over about the 65MPH mark. It seems like that is the speed where the vehicle's shape is really starting to push air. If I stay under 65 on a road trip, I easily get 17+ MPG, but if I am above 70 I'm lucky to see 16mpg. Keep in mind you are driving a tall brick shaped vehicle.
 

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I get 21mpg on the highway with a warmed up truck cruising between 60-70mph with very little elevation change. This was logged with my on board diagnostic device as well as at the pump. I know I can do better than that and this was in the winter. My fuelly is below is in my signature. The first fill was a dealer fill so that is why do different than the others. The last fill was only had 10 miles of highway driving. The rest was in town. I should also add that in town for me is basically mountains.

I usually way over exceed the EPA mpg ratings. With this frontier not soo much. I do expect to hit mid 20's in the summer time but even that is not overly impressive to me.
 
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