I know my speedo is now slightly inaccurate with the larger tires (reads slightly lower than actual road speed). Do any of you high tech guys know if this also effects the odometer? Seems like it might not clock miles quite as quickly as it should if it is based on the speedo, or is the odo based on gps or something where it is still accurate?
also is the onboard gas mileage and "range" calculation based on actual fuel consumption in which case it would still be accurate or is it based on tire revolutions or something that would now make it inaccurate?
MPG will be effected
The larger the tyre the more effort it is for the engine to push
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Re: larger tire effect on odometer and mpg computer?
Thanks. I know the larger tires will make mpg worse. They also lift the car 3/4 of an inch so it will be less aerodynamic. What i was wondering is if the onboard mileage computer that gives mpg in the evic is accurate with the new tire size or if the mpg reading in the evic is 5% worse than i am truly getting due to the larger tire circumference not being accounted for in the calculations.