that may be. but our daily driving between you and me(and b-uno) is much different. i'm driving on what is basicly a ice rink..best way to describe it. i run a soft compound snow tire which is studded(cooper discover M&S). lowering the pressure helps stop, turn, get going much faster then if they were maxed out. also theres no sidewall flex becuse the tires just slide.

now when summer comes and the summer wheels/tires go on i run 50-60psi in those(cooper discover ATR)

this is what i've done with all my trucks(even lower pressures in my expedition/explorer during the winter) and no issues even at high speeds.

 

Ahhh, you're right. I didn't remember who posted the 30psi number.

Mark

 

well i put ours at 75psi and havent drove it, but the wife didnt complain about the ride to work so who knows.

 

lol they never do...its like my boss. he took his wifes car out last weekend when they went to dinner. it was running rough and the CEL was on. he said "how long has this been on?!?" her responce was "oh only a month or two" it ended up being a bad coil and some other things..but it being a lexus cost him $700...so i'm just saying because she didnt complain doesnt mean there wasnt a differance :-p

 

ya i dont know sometimes if they even look at the dash.

 

oh, you, you sexist guys !!!!!!!!!!!!! How DARE you be so politically incorrect !

j/k

Just so it gets them there and back is all that matters ! (and the color !)

 

i am on a road trip to my wifes fathers house located in mexico.. i have about 7 pasangers that weight about 160 each, with about 1600 in luggage. i had my Bfg´s Rugged Trail At´s 65 psi each n it was pretty horrible i was bouncing all over the place with these untaken care of roads.. so i aired them down to 45 psi in the front and 55 in the back, rides like a cadillac, 95-106mph for long periods of times... and it handles good jus have to slow down for those ugly sharp turns.. so far 1,800 miles

2000 ford ex, 2wd v10

 

I'll be the 1st one to go ahead and call you a fool for doing 100mph at 20lbs less than recommended pressure(assuming they were at least D rated) with a truckload of people, especially on roads that you say suck...

 

load rrange e, plus that what it says on the door jam..

 

heres what i dont get, why are people airing up the rear of the vehicle tires more then the fronts if they are not towing a trailer with tounge load? doesnt anyone realize the heaviest part of the vehicle is the front??? thats where the giant engine is.

 

You are right...tire pressure "should" be based on required load. Typically the rear axle has a higher GAWR and thus they (mfg's) recommend higher pressures in the rear to insure not exceeding the GAWR.

However for my specific situation (everyone's is different) I primarily use my Ex for snow and tow duty and have a 4 mile each way commute (non towing)...I just leave my pressures as I desire for towing since when I typically tow I tow thousands of miles...as an example...our July 3 week trip thru North Dakota, Montana, Idaho, Washington, Wyoming, South Dakota before heading home to Indiana will traverse about 4500 towing miles...more sightseeing on top of that...all those miles I'll leave 60 front and 70 rear as I do find that to be a very nice spot for my likes.

Your GAWR on your door jamb sticker will be achieved with the mfg recommended door jamb ratings...at least I believe the lawyers wouldn't have it any other way!

Joe

 

I have an '03 Excursion with the 6.0L diesel.

The door jamb states 50-front and 55-rear.

This is too light for me... as I find that 60 in the front and 65 in the rear has been perfect year-round... and due to the extra weight of the diesel motor versus a gas motor.

I run only load range "E" tires and unless I was towing a fully loaded trailer that was at the max for my truck... only then would I air up the back tires... but at 65lbs, I have never had an issue. With 60lbs in the front, wear is better due to the extra weight and if I were to inflate them more, my streering starts to wander on the highway.

I got 90,000 miles from my OEM/stock BFG Rugged Trail tires that came with my truck and 80,000 miles from the BFG All-Terrain KO's... and now I am on my second set of BFG-All-Terrain KO replacements... and hope to get 70,000 - 80,000 out of them as well.

Keep in mind, I buy my tires at Costco and they rotate and balance as often as I like... which is every 5,000 - 7,000 miles. I alternate between having them rotate them in a "X" pattern and then "front to rear"... this ensures that every tire gets rotated to each corner of the truck and wears evenly for the life of the tire.

Again, I inflate to 60/65 (front/rear) year round with my diesel Excursion.

 

I upped my tire pressure to 60/65 front/rear, up from 50/55... and am VERY happy with the improved handling and decreased wandering. The ride is slightly stiffer, but hey its a truck. I am able to make fewer corrections when traveling down the road and don't have to make as large corrections as before.

I was surprised to see how much less wander and how much better the steering response was with just 10 more psi. I know that other people have mentioned lowering tire pressure, and that helping wander... don't know how, but it might have to with my stock soft springs, increasing the tire firmness may be reducing the axel warp or wander some how.
Each upgrade I have done has improved the wander and handling, but the simple tire pressure did as much a the Rancho SS.

I have stock springs (yea, need to do the f250 spring upgrade), rancho Steering Stabilizer, Bilsteins, and stock wheels and tires (they are E load range BFG Rugged Trail)

 

Glad to hear that it is riding and driving better for you.

Excursions are heavy trucks.. and those of us with diesel motors, it is even heavier... so 60psi in the front and 65psi in the rear works well with the stiffer load range "E" tires.

 

on my summer wheels i'm running 55psi all around, rides hard but it has bumped the MPG up a tad.