Hybrid owners post your mileage with oversized AT tires

[TRUCKHEF]

245/70/17 falken wild peak at3w, cant break past 30mpg in the city...i was willing to take a 1-2 mpg hit but 12? whaaaaaat

Highway driving is about right, im getting 31 mpg when cruising along at 65-75mph.

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[pndwind]

245/70/17 falken wild peak at3w, cant break past 30mpg in the city...i was willing to take a 1-2 mpg hit but 12? whaaaaaat

Highway driving is about right, im getting 31 mpg when cruising along at 65-75mph.

What was it before? Did you get a few tanks on the oem tires to compare?

 

[TRUCKHEF]

What was it before? Did you get a few tanks on the oem tires to compare?

I’ve got no idea, I put the tires on the same day as I got truck because I was getting credit for the factory tires but they needed less than 10 miles on them.

 

[Johnkn]

Those tires are 2” taller than your stock tires. Your speedometer is now reading ~7% slower than with stock 225-65-17 tires therefore the fuel economy appears lower by approximately the same value. The biggest change is that the stock tires are about 25 lbs where your 245 ATs are about 40, that’s a huge jump that will significantly impact fuel economy.

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[TE37Mav]

Those tires are 2” taller than your stock tires. Your speedometer is now reading ~7% slower than with stock 225-65-17 tires therefore the fuel economy appears lower by approximately the same value. The biggest change is that the stock tires are about 25 lbs where your 245 ATs are about 40, that’s a huge jump that will significantly impact fuel economy.

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part of that statement should be true but Speedo reedings arnt that far off mine is only 1 mpg under 50 and 2mph under 80.

 

[TE37Mav]

245/70/17 falken wild peak at3w, cant break past 30mpg in the city...i was willing to take a 1-2 mpg hit but 12? whaaaaaat

Highway driving is about right, im getting 31 mpg when cruising along at 65-75mph.

Running same size falken Rubitrek which are basically same tire as at3. I’m getting
39-41mpg combined. Calculated at the pump. If your going based of the dash I wouldn’t jump to conclusions.

 

[pndwind]

Running same size falken Rubitrek which are basically same tire as at3. I’m getting
39-41mpg combined. Calculated at the pump. If your going based of the dash I wouldn’t jump to conclusions.

And if you calculate by hand and the mpg still seem way off I would wonder if something in the hybrid system is not working like it should. That’s why I was wondering if you had gotten to drive it much on the original tires.

 

[pndwind]

I’ve got no idea, I put the tires on the same day as I got truck because I was getting credit for the factory tires but they needed less than 10 miles on them.

Any idea how many miles per tank of fuel you are getting?

 

[MLowe05]

I would expect a 10-12 hit. I don't understand buying the hybrid and then putting tires on it that ruin efficiency, but to each their own.

 

[Guv]

I would expect a penalty but not nearly that much. Oversize A/T tires on a hybrid Maverick seem as practical as A/T tires on a Mustang. At least use the same size A/T tire as OEM.

 

[Darnon]

they are actually only 1” larger diameter.

225/65R17 (stock) is 28.5" tall. 245/70R17 is 30.5".

 

[Mxer97]

225/65R17 (stock) is 28.5" tall. 245/70R17 is 30.5".

I’m dumb, for some reason I was thinking 245-65-17. I’ll delete it

 

[Johnkn]

part of that statement should be true but Speedo reedings arnt that far off mine is only 1 mpg under 50 and 2mph under 80.

No, all of my statement is true.

I'm not addressing whether the speedometer was originally accurate or is accurate after the tire change. I'm talking about the relative change before and after

Adding tires that are ~2" taller than the originals will change the speedometer reading by ~7% over the original reading. And it will change the truck's calculated MPG the same amount...

Then you throw in tires that are 60% heavier and have a much greater rolling resistance due to their tread pattern .

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[Bob The Builder]

I plan on installing Falken Wildpeak A/T Trails OEM size on my Hybrid. These same tires in OEM size gave us a reduction of 3MPG on my wife's Cherokee. If I anticipate a 5 MPG hit on the Mav, given the fact I only drive around 2500 miles a year and given the fact I will no longer need the semi annual trip to the tire store for the winter/summer tire swap at over at 40 bucks a pop now , the cost will be a wash at 6 bucks a gallon for gas.

The benefits will be a much more rugged tire to withstand our pot hole scarred roads. You know Murphy's Law on pot holes, right? Swerve to miss one and you will hit 3 others. It never fails. One of life's sacred rules.

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