2014+ Gas Mileage (MPG) Topic

Rawyzf · November 28, 2015

I dropped it off with the dealership this morning. The end mileage average was 1581 miles, 16.8 mpg at 95% interstate driving.I stopped the sale so it's actually their truck. I told them they could fix it, sell it,auction it, whatever I didn't really care.

Sounds about right for an LT tire. Good luck to you and them. If they/you want closer to sticker mpgs, you'll have to drop to 265/65/18 tire with more of a highway terrain.

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kennerz · November 28, 2015

40 psi is way too high on the stock P rated tires, especially for the back tire. You are just asking for problems on wet roads not mention the tire wearing out way too fast in the middle.

I'm running 22" terra grappler G2's 285/45/22 - consensus was these tires like 40~45 psi... Sorry I didn't mention that.

uptou2bu · November 28, 2015

Thanks all for the info.

tnchevy · November 29, 2015

I'm running 22" terra grappler G2's 285/45/22 - consensus was these tires like 40~45 psi... Sorry I didn't mention that.

You are right, thought you were talking about the stock P tires. Go to Toyos website and download their inflation chart and it will tell you what psi you need to run.

tyrich88 · November 30, 2015

Thanks all for the info.

You're welcome! And good luck with your next purchase, whatever that may be.

And FYI, since these new tires are lighter. my MPG went up 1-1.5 on the read out, which should translate to slightly higher on a hand calculation, which leaves me around 18-19 at around 72-75 mph

If you're looking for gas mileage, remember to go with the stock P rates tires, as they are lighter and a lot better on MPGs

tnchevy · November 30, 2015

I don't know if it is these 6 speed transmissions or what but on my last truck (2002 - 4.8- 4.10 gears) I only lost about 1/2 mpg and same as my previous work trucks when going to an LT AT tire. My latest work truck is F150 and it lost 2 mpg when going to an LT tire (5.0 3.55 gears). I like the AT look but I don't really "need" an AT tire. I have been looking at the Cooper ATP's sold at Discount Tire. They are a P rated tire and I found out the weight 42 lbs in a 275/65/18. The stock 265/65/18 sra's weigh 35 lbs so hopefully it won't be too big of a hit on gas mileage when I finally get rid of these crapyears.

Edited November 30, 2015 by tnchevy

Rawyzf · November 30, 2015

I don't know if it is these 6 speed transmissions or what but on my last truck (2002 - 4.8- 4.10 gears) I only lost about 1/2 mpg and same as my previous work trucks when going to an LT AT tire. My latest work truck is F150 and it lost 2 mpg when going to an LT tire (5.0 3.55 gears). I like the AT look but I don't really "need" an AT tire. I have been looking at the Cooper ATP's sold at Discount Tire. They are a P rated tire and I found out the weight 42 lbs in a 275/65/18. The stock 265/65/18 sra's weigh 35 lbs so hopefully it won't be too big of a hit on gas mileage when I finally get rid of these crapyears.

My first tire change was from the GY 265/65/18 to Cooper ATP 275/65/18. It was about a 1mpg hit.

tyrich88 · November 30, 2015

My 275/70/18s are at like 55 lbs. So they are very different from the stockers but they still are not bad at all for being a 10 ply
My 285s were 65+lbs...

tnchevy · November 30, 2015

My first tire change was from the GY 265/65/18 to Cooper ATP 275/65/18. It was about a 1mpg hit.

Is that after you account for the 3% size difference? I was hoping for 1/2 mpg hit with those tires but glad you chimed in, probably will end up getting them anyway. They are about the only P rated AT tire that I like the looks of. I also really liked the AT3's I had on my 2002 model and the ATP's look very similar. The downside is that the nearest DiscounTire is 2 hours from me.

Rawyzf · November 30, 2015

Is that after you account for the 3% size difference? I was hoping for 1/2 mpg hit with those tires but glad you chimed in, probably will end up getting them anyway. They are about the only P rated AT tire that I like the looks of. I also really liked the AT3's I had on my 2002 model and the ATP's look very similar. The downside is that the nearest DiscounTire is 2 hours from me.

I drive mostly city though, I bet you get better highway.

Order them from DTD and then have a local shop put them on.

tnchevy · December 1, 2015

I will never go the mail route again with tires. I did that with a set of Nitto Terra Grapplers through discounttire and 3 out of 4 of them were pretty bad out of round. Had to have them road force balanced with a lot of weight.

Rme2513 · December 3, 2015

I'm running 22" terra grappler G2's 285/45/22 - consensus was these tires like 40~45 psi... Sorry I didn't mention that.

most p ratted tire have a max psi cold around 40 to 44 so yes 40 is fine

Sierra Jon · December 11, 2015

So the other day (and in the wrong thread) some people were talking about MPG loss due to "winter mix" fuel. Not sure the validity of this but I have noticed a 2 MPG drop over the last month or so. Well yesterday I bought Mobil gas and I noticed today my mileage is back up to mid 17's where it used to be...

Does anyone know if different companies use different additives/winter blends etc...? I know they all say their formula is the best and I remember reading a study that Shell had the "best gas" but what do you all think? Or was I just driving like a masshole for the past month...?

GPGuy · December 13, 2015

Winter blend does in fact lower your MPG...but also keep in mind that lower outside temperature, remote start etc will also have an effect on it. And yes to my knowledge they all use a slightly different formulation of winter gas.

Not 100% about in the US but in Canada Shell is the only station to offer ethanol free gasoline which will raise your MPG, since ethanol burns faster than gasoline.