wildpeaks gas mileage drop?

Looking at 10 lbs extra per corner with new wildpeaks and wheel combo. Seems like a lot. What kind of gas mileage damage am I looking at? Going from oem 245/75r16 Hankook ht and steelies to 265/70r17 Wildpeaks and trd pros. Got the tires on order but now not sure. Could go toyo or nitto for better mileage?

 

I check my mileage pretty much at every fill up. I've noticed a 1 mpg drop. Haven't had them long enough to be certain yet. If the 1 mpg drop off is correct, I'd consider it a worthy trade for the positives re: the tires. I like the tires a lot.

 

I’ve got 45k on my wildpeaks and I average 18mpg with summer blend gas. Not sure what gen you have or what load rating you ordered but I have a 2015 and SL. 265/75/r16

Bottom line: minimal drop in gas mileage

 

Don't forget to factor in speedo/odo error when you do your calcs post install

 

I've never noted a significant difference in fuel mileage because of tire weight. It is tread design that seems to matter. Most of the more aggressive treads are LT tires which are heavier. But the fuel mileage difference is due to tread design more than weight. Aggressive tires have much more rolling resistance. I've gone from "P" series tires to "E" rated tires weighing 10 lbs more and saw no drop in fuel mileage because the tread design was similar. I've also seen 2 mpg drop when going to an "E" rated AT tire to an "E" rated mud tire that were of similar weight.

 

Hmm. I'm going load rating sl to sl. first tank of fuel nailed 24.5 mpg per the computer which seems great. I'm expecting at least a minor loss because the Hankook are smaller, light, freeway tires.

 

Y'all get much better mileage than I do. I think the best I've ever gotten is 18mpg. Usually it's more like 16mpg.

 

Well, different engine is one thing. Also, I am babying it because it's new and that mpg is just off the computer, not a fill up to fill up and calc. Also on stock freeway tires that only weigh like 35 lbs. If you have c or d load tires, they weight way more.