MPGs - Many People Griping - A Foundational Knowledge Primer To Assist in Better Efficiency

[teghogh]

You are saying your LC on 35s (which given that dimension probably also means a heavy duty load rating) is capable of getting the same mileage as the GX OT on the factory issued OEM 33” SL rated Toyos… the ones with less tread depth and rolling resistance than that exact tire bought brand new from a tire store. That’s gotta be at least a 30 lbs difference in unsprung weight at every wheel. At LEAST. In which case the LC getting similar or same mileage is performing a heroic feat. Put heavy 35” tires on the GX with that much additional rotating mass and overcoming the extra 2” of diameter and see how the MPGs are then and how much boost the motor employs. My 5 days with the Tundra on 35s showed me plenty. It’s ugly… I couldn’t get an avg out of the 12s and that was a blend of city/highway. I’m positive if I was trying to hyper mile I could have gotten above 13 and probably even 14 if I did a lot more highway skewed driving vs an even split.

I agree that it’s unlikely for somebody to consistently get 29 MPGs on the highway in the LC on cruise control, especially since the cruise control constantly brakes to correct and maintain a set speed after accelerating. On a pancake flat highway and factory tires at the correct PSI, driving a steady 65 MPH will easily get one 25+ MPGs though.

My 35 tires weight 52lb. Each wheel and tire were 8lb heavier than stock .

 

[Blue Sky]

My 35 tires weight 52lb. Each wheel and tire were 8lb heavier than stock .

What tires are you running? I wasn't aware of any 35s on 18" wheels lighter than the Nokian Nat at 58.4lbs?

 

[teghogh]

What tires are you running? I wasn't aware of any 35s on 18" wheels lighter than the Nokian Nat at 58.4lbs?

315 70 17 Goodyear wrangler MT that come on Bronco Sasquatch package. 52lb
Method wheels are 25 lb

 

[Blue Sky]

Wow, that is super light. I've always liked the tread pattern on those Wranglers.

The width of your 315/70r17s tires are ~16% wider than a 265/70R18 stock LC and ~22.5% wider than a stock 1958. The wider contact patch and more aggressive A/T tread will no doubt increase rolling resistance and that will have an impact on MPGs.

 

[teghogh]

Wow, that is super light. I've always liked the tread pattern on those Wranglers.

The width of your 315/70r17s tires are ~16% wider than a 265/70R18 stock LC and ~22.5% wider than a stock 1958. The wider contact patch and more aggressive A/T tread will no doubt increase rolling resistance and that will have an impact on MPGs.

despite being 315s the thread pattern is actually 285. then again for reference i added my MPG when the truck was stock as well.
also per C&D, and edmunds test that was shared yesterday between 4runner TRD pro and the Gx the freeway MPGs are identical.

 

[RideWithYanu]

It’s been a long time since Car & Driver were a respectable automotive journalism company. I’d not put too much stock into their “tests.”

 

[teghogh]

It’s been a long time since Car & Driver were a respectable automotive journalism company. I’d not put too much stock into their “tests.”

How about MT ?