Post your Gear Ratio / Tire Size MPG

chris.lee718 · February 17, 2023

Just as the title says. Post your set up friends.

I'm about to put in 4.10s with 34s and wonder what y'all are getting with yours.

And for all of you grumps out there that will tout the search tool, it's garbage.

Homewrecker007 · February 17, 2023

Currently stock tire size and 3.42 gears. I will be changing them to 3.73 eventually.

jonathanspw · March 16, 2023

3.08 with 34s and seeing about 15 hwy.

Bout to go to 4.10 with lew tune.

Homewrecker007 · March 16, 2023

47 minutes ago, jonathanspw said:

3.08 with 34s and seeing about 15 hwy.

Bout to go to 4.10 with lew tune.

That will definitely perk it up.

MikeBMW · March 17, 2023

3.42 with 35s on a 91+ octane tune.
20-22 MPG on the highway, 11 to 14 MPG around town depending on the stoplights.

chris.lee718 · March 17, 2023

Did the tune get you those numbers or are you driving down hill on the highway?

Edited March 17, 2023 by chris.lee718

MikeBMW · March 17, 2023

42 minutes ago, chris.lee718 said:

Did the tune get you those numbers or are you driving down hill on the highway?

LOL! I just did the tune to keep the 5.3 running on top tier gas.
I don't think it made a difference for MPG.
I, suppose, I could re-tune to e85 and check it out but I have no interest in doing so.

chris.lee718 · March 17, 2023

2 minutes ago, MikeBMW said:

LOL! I just did the tune to keep the 5.3 running on top tier gas.
I don't think it made a difference for MPG.
I, suppose, I could re-tune to e85 and check it out but I have no interest in doing so.

Is the diablew tune (I'm guessing that's what you have) really worth the $600?

Edited March 17, 2023 by chris.lee718

MikeBMW · March 17, 2023

Just now, chris.lee718 said:

Is the diablew tube really worth the $600?

I dunno, I use the Superchips F5 Flashpaq:
https://www.holley.com/products/tuners_and_programmers/handheld_tuners/superchips_f5_flashpaq/

tannerga · March 17, 2023

35s w/ 4.56 and a bunch of other dumb stuff going on (nothing besides gears mechanically yet, but extra weight and drag). Average is I think 13 if computer can be trusted/ was corrected right, can do 18 or so on the highway if I keep it under 70, but aero becomes a problem.

Never really cared about mileage with this thing tbh.

chris.lee718 · March 17, 2023

1 minute ago, tannerga said:

35s w/ 4.56 and a bunch of other dumb stuff going on (nothing besides gears mechanically yet, but extra weight and drag). Average is I think 13 if computer can be trusted/ was corrected right, can do 18 or so on the highway if I keep it under 70, but aero becomes a problem.

Never really cared about mileage with this thing tbh.

Are you running wide tires and a big lift?

tannerga · March 17, 2023

14 minutes ago, chris.lee718 said:

Are you running wide tires and a big lift?

Hard to find a narrow 35 that I'd want to drive on the highway, but 35x12.5 ridge grapplers. (4.10s would be a better match if I wasn't building a dumb thing)

Also carry around an extra probably 800 pounds between a decked, camper shell, and stuff that lives in it, just 4 inch bds on the lift and aftermarket bumper/ some fender trimming to fit the tires, but enough that it's worse than the usual brick going down the road. Obnoxious tow mirrors going on for boat/ trailer reasons. (Don't think I towed anything in that 13 average over the last 50, but maybe had a kayak on top of it Monday and lifetime since the lift/other dumb stuff via trip odometer is 13.9 last I looked (to be fair, more towing, off-road, and general not highway than most over those 10kish miles).

If I have to start going to an office again, will buy a beater civic or something, but mileage was not a design concern.

Beater civic would also give me an excuse to start with the engine work, so I expect mileage gets worse after that.

chris.lee718 · March 18, 2023

3 hours ago, tannerga said:

Hard to find a narrow 35 that I'd want to drive on the highway, but 35x12.5 ridge grapplers. (4.10s would be a better match if I wasn't building a dumb thing)

Also carry around an extra probably 800 pounds between a decked, camper shell, and stuff that lives in it, just 4 inch bds on the lift and aftermarket bumper/ some fender trimming to fit the tires, but enough that it's worse than the usual brick going down the road. Obnoxious tow mirrors going on for boat/ trailer reasons. (Don't think I towed anything in that 13 average over the last 50, but maybe had a kayak on top of it Monday and lifetime since the lift/other dumb stuff via trip odometer is 13.9 last I looked (to be fair, more towing, off-road, and general not highway than most over those 10kish miles).

If I have to start going to an office again, will buy a beater civic or something, but mileage was not a design concern.

Beater civic would also give me an excuse to start with the engine work, so I expect mileage gets worse after that.

Okay.... Let me see this warlock.