OT. Truck tires for gas mileage

[Brians356]

Keep the tire pressure up to push the max spec for minimal rolling resistance, free.

Free if you get your tires for $0, sure. Running pressure even a little too high hastens tread wear, especially on traction tires typical on our 4x4 vehicles. My Tacoma lists only 26 lbs front tires (265/70x16).
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[jdh47]

This chit is going to pass. I wouldn't waste my money any more than I am forced to by this administration.

 

[butchlambert]

I don't understand ...

Young feller, it is very obvious. 20% increase in mileage by "dual piping?" and doing a computer thing. I've been in the business over 50yrs and call BS on it.

 

[ALK]

Young feller, it is very obvious. 20% increase in mileage by "dual piping?" and doing a computer thing. I've been in the business over 50yrs and call BS on it.

Along with the twice pipes you will need another cat. converter- blowing hell out of budget.

 

[Brians356]

Young feller, it is very obvious. 20% increase in mileage by "dual piping?" and doing a computer thing. I've been in the business over 50yrs and call BS on it.

Just put one of those swirly thingies atop the carburetor, get 100 mpg. Used to advertise them in Popular Mechanics but Big Oil squelched it, they buy out all such ideas, keep us enslaved.
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[Old Navy]

Your looking at 20 revolutions per mile less with the 33" tire. Not much of a gain. What you do gain with the proposed tires you describe is less contact with the road, equating to less traction for breaking, cornering, and acceleration. Same condition exist when people over-inflate tires to supposedly obtain better mileage.

You will gain far more by minor changes in driving habits / style, and ensuring your vehicles maintenance is current than messing with minor tire size differences (of similar tread styles).

YMMV

Besides screwing up the odometer you are screwing up the antilock brakes and probable other things. GM will not/cannot adjust the computer for taller tires. As far as dual exhaust goes, you can only put a cat back exhaust on the new trucks. My Chevy came with a 3 1/2" exhaust on it, more than big enough to handle the HP. If your truck has the 4-8 cylinder mode, that is another problem. Been there and done all the above.

 

[Gary in MD]

Just had these 35 inchers put on! Is this why my mileage has dropped a little? LOL

 

[rr2030]

Keep the tire pressure up to push the max spec for minimal rolling resistance, free. Clean air filter, KN might help too. Google to find out if a computer tune has been shown to help your specific vehicle, but that will cost around $500.

Garbage

 

[sneakboxer]

I went from a 265/75r16 factory BFG rugged fails (garbage) to a LT235/85r16 Cooper AT3 and when they wore out I'm running a 265/75r16 Mich Defender now. On my light Nissan Frontier the LT 235s were a bit stiff but ran great in everything I put the truck through. I moved east and found my self on the pavement at freeway speeds more often and went to the Michelins. I recorded no loss of milage going to the pizza cutters maybe a very slight improvement. The factory tires were lighter so if stayed with the same weight I think the improvement would of been better. I did see a MPG or two increase with the less aggressive Defendersm wider but lighter. I liked the pizza cutters but my truck is too light for them in my opinion. Check the rim with if you go skinny, if you air down you may have some issues (or at least the internet said so) no issue for me but I never really did anything crazy off road. The Defenders are quiet, wearing like iron and sure footed.

 

[Creedmoor02]

Besides screwing up the odometer you are screwing up the antilock brakes and probable other things. GM will not/cannot adjust the computer for taller tires. As far as dual exhaust goes, you can only put a cat back exhaust on the new trucks. My Chevy came with a 3 1/2" exhaust on it, more than big enough to handle the HP. If your truck has the 4-8 cylinder mode, that is another problem. Been there and done all the above.

You can change tire size on a gm truck with almost any box tuner, never mind custom tunes.

 

[old_heli_logger]

I went from Goodyear MT/Rs to Falken (a street tread design - don't remember which model). My FZJ80 went from 11mpg average to 14mpg average (calculated with a slide-rule), but I hate those friggin' Falkens. Gravel gets wedged in the tread, sometimes so bad it throws the balance off.

Absolutely true...they pick up rocks like crazy, but they have excellent traction

 

[DiffEQ]

Young feller, it is very obvious. 20% increase in mileage by "dual piping?" and doing a computer thing. I've been in the business over 50yrs and call BS on it.

This was 1985 and 1986, doing a C30, went so well, did it to a C10.
Someone recently advised me that I'd need to have the electronics modified if I did the same to my Land Cruiser. Thus, the BS is in my ignorance on what it would take with a modern car. I stand my my memory of the numbers back then.
Edit to add, my recollection was the C30 went from 8 to 12 mpg, which is way more than 20%.

Along with the twice pipes you will need another cat. converter- blowing hell out of budget.

My plan would be to dual pipe without catalytic converters, keeping the original exhaust when I have to go for county DEQ.
Out here in Po'tland, the tweakers steal cats without fear of repercussions - removing and straight piping seems to be an answer to a problem best avoided. I hear cars regularly that have had their exhaust cut - reminds me of the days when mufflers rusted out every two years or so.

 

[Evan]

A plain Michelin LTX has always done the best for me on mileage. I got 10 ply tires once. If you don't absolutely need them for the load capacity, then you're better in every objective way without them.

 

[Rsadams]

I didn't read all the replies so if somebody else posted , sorry.... The easiest thing you can do is remove any unnecessary weight from the vehicle and keep the proper amount of air in the tires.... Keep your air cleaner changed... None of those things have any bad side effects.... Weight is a real killer and so are flat tires....

Unfortunately with this crap going on about the only way you can really get your milage up is to do what I did when I bought my last car.... I never had a mustang GT with a standard , I have owned every other sports car over the years.... I also thought about buying a new 4 wheel drive , love them... In the end I bought a brand new Toyota Corolla.... I thought when I bought it well Trump won't be president forever.... Glad I did now.... We have owned 6 in a row and never put one in the shop.... I still have my truck but for 90% of my trips the Toyota works just fine and makes great gas mileage is comfortable and the A/C down here in Texas will freeze you out... Unfortunately used cars are super expensive right now... Last Toyota we traded in a few months ago , Toyota almost gave us what we paid for it new on a trade in on another new one...

Let's go Brandon.....

 

[butchlambert]

I drive about 60+ miles a day to my auto shop and back. A customer gave me his 2009 Corolla with a blown headgasket. It is my daily driver. 30+MPG, cold air, and sat radio. It now has 300,000 miles on it. It uses 1qt of oil between 4,000 mile changes. I replaced 2 coils on it last week. I still use my 2002 GMC Duramax 4x4 to make a trash run once a week. It has 325,000 on it and is the most dependable and trouble free vehicle that I have owned. My wife drives a 2013 Genesis with 60,000 miles on it.

 

[dellet]

There is a whole subset of high MPG tires, “Low Resistance” or “E tire” would be the terms to look for while shopping.

They were initially developed specifically for the vehicle manufacturers to game the MPG ratings of what they produced, and weren’t generally available or the price point limited sales.

Once the Hybrid market took off these tires began becoming easily available and the price dropped. Almost all tire manufacturers offer something, Michelin probably has the best selection.

A very common complaint with early Hybrid owners was tire replacement. They would come in for tires, get a price quote and balk at the cost and lack of selection. They would often choose a same size, normal tire due to cost. Then within 30 come back complaining of reduced fuel mileage.

Based on the number of complaints, they must make a noticeable difference.

Online sales vendors like Tire Rack that allow searches by product type will get you there.

Low Rolling Resistance Truck Tires at Tire Rack

Low Rolling Resistance Truck Tires found in: General Grabber HTS 245/75-16 Tire, Michelin LTX A/T 2 275/70-18 E Tire, Goodyear Assurance CS Fuel Max..

tires.tirerack.com

 

[Brians356]

There is a whole subset of high MPG tires, “Low Resistance” or “E tire” would be the terms to look for while shopping.

Those are fine for passenger cars. The OP needs truck tires, presumably for at least some off-road and mud/snow conditions. Looking at those selections, they're "all-season" highway tires, and mention "wet surface" meaning wet pavement.
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[dellet]

Those are fine for passenger cars. The OP needs truck tires, presumably for at least some off-road and mud/snow conditions. Looking at those selections, they're "all-season" highway tires, and mention "wet surface" meaning wet pavement.
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Im running 265/75r16 on my truck. Was thinking about looking for a taller, narrower and lighter 10 ply highway tire for my truck.
Any ideas? Thinking about 32-33" but narrower

I missed all those qualifiers in the OP.

Doesn't matter tho.

The Michelin LTX AT2 would work fine, and is available in an E rated load capacity. At least it does pretty well in Montana

If he needs a real snow tire the Ice Xi3 is about the best you can do for low resistance.

There are others out there.

 

[butchlambert]

You can change tire size on a gm truck with almost any box tuner, never mind custom tunes.

Box tuner??

 

[284winner]

Im running 265/75r16 on my truck. Was thinking about looking for a taller, narrower and lighter 10 ply highway tire for my truck.
Any ideas? Thinking about 32-33" but narrower

I've been running 285/75-18 on my Super duty. Went from the stock tire to those and picked up a couple mpgs. Recently found a set of Kenda Klemmer tires in 275/80-18. Taller yet but lost 3-4 mpgs just stepping up a little more. There is a point of loss. Just make sure you don't cross that point.