Gas Mileage with big rim, fat tires?

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Old 03-14-2016, 10:55 PM
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Gas Mileage with big rim, fat tires?

Hi guys,

I used to have TL and now back with TSX wagon.

I am planning to get 19s on all 4 corners and debating if I should go 9.5" or stick to 8.5". I am hesitating to go 9.5" because I don't want to mount 225/35 or 235/35 but 245/35. With 245/35, I am considered about the gas mileage since it's my DD and 19" would be fairly heavy already.

What kinda gas mileage are you guys getting with big fat tires and fairly heavy aftermarket rims? I am currently getting 27.xmpg for mostly high way driving.
Old 03-15-2016, 10:36 AM
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Assuming your tires are in spec and your driving habits don't change much, I'm guessing the bigger factor is the weight of your rims, not the fact that you have wide 19s. Stock rims are already pretty heavy, ~25 lbs IIRC, so it shouldn't be hard to find lighter or comparable weights if that's a concern for you.
Old 03-15-2016, 11:24 AM
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Takoyaki

I had 19 x 8 Work. They weigh about 25 per wheel.
I ran 245/35 Conti DWS.
I also had my alignment back to stock with SPC bars.


FWIW I never noticed any change in the gas mileage.
Old 03-15-2016, 12:20 PM
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Oh cool!! I might just go 245/35 than. Thanks guys.




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