eli5: Why does changing tires to a larger size make my truck gas mileage go down?
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Weight, surface friction and aerodynamics.
Many large tires are also wider. 35s on my Jeep are 12.5” wide. That requires a rim of at least 8.5”. Heavier rim, heavier tire, requires more fuel to spin. I want to say one tire/rim is almost 80-100lb as my tire is 64lb alone.
12-14mpg city and 16 highway. We don’t drive it often
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