I have an 04 fx4 with 2.5" level. Lookin to get some 35x12.50s. Runnin flowmaster exhaust and k&n intake. whats my mileage drop gonna be like? 1-2 mpgs or more?

 

you can expect 11 to 12. trucks arent mpg queens. If youre worried about mpgs dont buy 35s

 

Yeah...also depends what gears you have installed and 35's will rub with only a 2.5 level

 

some 285/75/17s would be good. if you have 17s, im not sure of your rim size. you can find something for a 16 around the same size

 

Yea i get about 15 in the city and 22 highway now its not bad. ive got the k&n cai and dual flows. looking to get a gryphon here soon. and yea i know they will rub and im lookin at just gettin the 295/75/18 trail graps. They would also be about 10lbs lighter per tire too so ill prolly do that. But i reckon whatever milage i lose with tires i would gain back with the programmer. so it might stay about the same if i do all that?

 

I have 35's and iv noticed a considerable drop in fuel economy..... But it's still
In the range I expected. I put $100 in (@1.12\l) and did ~715km trip. I noticed a huge drop in the city but have been using my civic more for running around.

 

I should add that I just have a 2.5" and a 6mm spacer and I rub near full lock (or offroading).

 

i get 8 with 37's!

 

I have 33"x12.5"x18 Toyo M/T's and get 10 MPG city and 14 MPG highway.

 

For those getting horrible mpg's and have a tuner.Learn to use it and tweak your Fuel Output.I have 35's,cat back duels,373 gears and the gots mod and with my tuner i get on average 17-18 city.Turning down your FO and tweaking your timing can play a big role in mpg's.