Quote:
Originally Posted by cjr1881
Why would you get worse gas mileage from wider tires? I don't see any logic behind that reasoning. My mileage avg i think has gone slightly down, but that is only because I am actually running tires that are about an inch taller in diamater than stock so my speedometer says I am going slower than I am and therefore showing less miles traveled than actual. I know tires have different roll resistance but the mileage would be negligible.
|
Actually it can happen. When you increase your rotational mass the engine has to work harder to spin the wheel and tire. As well as your brakes work harder to stop it from spinning. A lot more goes into a wheel/tire set-up than looks.