I have a scangauge, and it is jacked up as far as MPG...I have reset it, reprogrammed it, ETC and it shows like 3 MPG all the time ....I think I need to send it in or call the company. I only use it for tranny temps......
With just 285s you may or may not lose 3-4mpgs, depends a lot in your driving style. But add in all the extra weight from wheels/tires, and both front and rear steel bumpers, you will definitely lose some mpgs...that's just the price to pay for going all out.
If you plan on running the 4xinnovation front bumper you won't be able to use a body lift so you might want to keep that in mind.
I agree with this. The difference might be pretty small with just the tires, but adding front and rear bumpers onto it and there most definitely will be a drop in your mpg's.