seagram14

I just install 19x9.5 on all four with 255/35/19 tires. I took a long trip and found out that my 20-21 miles average for long trip had dropped down to 18 miles.

DavidR

Are your new wheels heavier than the stock ones?

Heavier wheels = lower mpg

And

Courtesy of google
Wide tires will give worse mileage:

Wide tires have more tread on the road. Wider tread means more tread deflection, which increases rolling resistance.

Wide tires have more frontal area, increasing wind resistance.

Wide tires and some rims have terrible drag coefficients.

seagram14

I guess they are.

Razz1

Plus a larger diametr will give you worse MPG in town.

RotaryFiend

A larger diameter should give better highway mileage, i guess not enough to offset those huge 19x9.5s though...

Endless Rotaries

iTrader: (6)

Yup, lost about 20% fuel economy, even though overall weight was same as stock.

Rishie

Outkast187

Yes, you will lose in all areas.

dannobre

iTrader: (3)

Summer = poor gas = poorer mileage

seagram14

Well at lease the care looks good doing it.

swoope

iTrader: (5)

and your are where?

beers

seagram14

I'm in Orange County.

Huey52

iTrader: (2)

OC New York, or SoCal?

seagram14

Orange County, CA - SoCal

pdxhak

iTrader: (2)

I think it is the same and I'm running the same size tires you are. Curious if you have any wheel liner rub with your front tires?

nuke0907

iTrader: (2)

i have 19's and i got 22.65mpg. i don't know what i got when i had 18's.

seagram14

I just had them put on Saturdat the wheels are 19x9.5 with an offset of 44. I have no issue with them so far. Other than the bad gas mileage

N rider89

i have 19's and get about 20mpg highway. i wonder what i would get if i drove 65 for a tank instead of 75+

Razz1

Show up at Autobacs and we will tell you all.

Go to So Cal forum.