acarr12

I bought a 2012 fx2 5.0. First thing I did was straight pipe it cat back And put 24's wrapped with 305/35r24s. Lowered the rear 2 inches to level it out. Says I get 18.5mpg on moderate hills and level grounds Traveling an indicated 56 mph. What's my actual numbers?

white08gt

not enough info? mpg readout is at least .5 to 1mpg. need to know rearend gear and new tire height and what size tire from factory.

130428

there's a 1% difference in OD between stock and your new size. In other words, the lie-o-meter would be just about as accurate as it was stock...
18mpg at 56mph sounds about right...

oldwrench

^^^would still have to calculate the change in tire height to get "real" miles driven.

my67falcon

There is no way to get a 100% accurate reading. Pumps shut off at different times, pump calibrations have slight variances and so on. The computer does a good job at getting close to actual mpg.

tanked_darren

Pics?

acarr12

I can post the gear and oem tires at a later time. But, here's some pictues



She Is a tad dirty. But I drive too much to find the financial benefit from keeping that much rim clean

acarr12

Lowered it about as much I could handle with these wheels as I still need to haul heavier trailers

my67falcon

What were you getting before? My '11 fx2 with 3.73 and 18" factory tires gets 23-24 with 56k on the clock. Use to get 20-21 but after the dealer replaced the O2 sensors it jumped a bit.

my67falcon

Thought I had pics of my mpg but can't see them showing up. I wouldn't think your rims/tires would hurt it that bad. Of course I don't know your definition of hills either. I drive from western Missouri to eastern Kansas