Larger circumference tires better mileage?
I am wondering if this could be true. I ordered my dually with the 4.10 rear axle for more power pulling the heavy 5th wheel. At 70 mph I'm over 2000rpm. Now that I'm getting a TC I don't need that mu...
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A taller tire will reduce rpm's at a given speed. However, the taller profile will cause more drag at higher speeds, most likely mitigating any mpg reduction due to the lower rpm's.
A taller tire also usually has higher tire pressures. That might help mpg. But they weigh more, so that might lower mpg.
A taller tire also usually has higher tire pressures. That might help mpg. But they weigh more, so that might lower mpg.
