Tire pressure, mpg, ride quality

[Action]

What is this "mpg" of which you speak?

Anyone know what TM or TB this is in?

The manual states there is a 250 mile range with a 25 gallon tank.... But, it lists the same for armor and non.

 

[erasedhammer]

The manual states there is a 250 mile range with a 25 gallon tank.... But, it lists the same for armor and non.

For M998s it lists 337 mile range. I assume that's at curb weight? What do they do to measure that, I feel like that was not accurately measured.

 

[someoldmoose]

I understand, it can be difficult to find exactly what you are looking for. No malice involved, just don't want the moderators to get on ya. Hope my answer about pressures helps.

Ever hear "your actual mileage may vary" ? Forget "may". No two vehicles will ever get the same mileage. It's a number based on limited testing. A"made up" number. It all depends on how you drive and maintain the vehicle. If an HMMWV gets 10 m.p.g. under normal use and conditions . . . yer doin' well.

 

[juanprado]

My HMMWV has the pressures painted on the fenders/sides. 25 rear, 20 front.

That is the old bias tire. I hope you are running more than that for radials at hwy speed!

 

[erasedhammer]

That is the old bias tire. I hope you are running more than that for radials at hwy speed!

I am currently running 30 front and 28 rear. Should I at 5 to each?

 

[juanprado]

I am currently running 30 front and 28 rear. Should I at 5 to each?

From my tire selling days in another lifetime, I would say the radials of this size even with the run flats should have a min of 30-35. No full size pick up truck/van/suv made in the last 30 years on the highway should be at 20. Recipe for heat which causes stress, separations, and blow outs.

Offroad at slow speed sure, city and hwy driving is not a good thing at these low psi.

 

[porkysplace]

Erasedhammer, Do you ever search before starting a new thread ?

For ANY vehicle ; find the correct air pressure by drawing a line across the tread from edge to edge with a tire crayon or chalk. Drive straight ahead a few tire rotations ( do not steer left or right ). Look at the line you made. If gone, pressure is right on. Outside remains ? Lower pressure and repeat check. Center remains ? Increase pressure and repeat check. This works regardless of tire size, width, or load. Obviously, overloading is dangerous at any tire pressure.

This advice applies to everything from a Smart car to a HMETT. Drive safely.

If he would have he would have found this.
[h=3]m998a1 mpg[/h]

 

[MaverickH1]

M1123 - 6.5L Optimizer N/A with 4L80e. Running 25 to 30 psi, I calculate fuel economy for every tank. Almost every one has been 12 mpg with driving 45 with stoplights mixed in. 14 mpg at 55 with no stoplights. 10 mpg while trail riding and country highways.

 

[mturner2003]

Erasedhammer, Do you ever search before starting a new thread ?

For ANY vehicle ; find the correct air pressure by drawing a line across the tread from edge to edge with a tire crayon or chalk. Drive straight ahead a few tire rotations ( do not steer left or right ). Look at the line you made. If gone, pressure is right on. Outside remains ? Lower pressure and repeat check. Center remains ? Increase pressure and repeat check. This works regardless of tire size, width, or load. Obviously, overloading is dangerous at any tire pressure.

This advice applies to everything from a Smart car to a HMETT. Drive safely.

Please do your research.