Ideal tire pressure?
TreadLightly
Joined: Oct 2006
Posts: 1,608
Likes: 0
From: SE Missouri
A fully assembled sterling 10.5" rear end I bet is about the same weight as a V10 or 5.4.
The other heavy things are 44 gallons of fuel, lots of seats, heat and A/C in the rear, spare tire, and all kinds of metal, glass, carpet, sound deadening, and stuff.
Plus the front tires are closer to the front of the truck then the rear tires are to the rear of the truck. Just the tire positions put more weight on the rear wheels.
The other heavy things are 44 gallons of fuel, lots of seats, heat and A/C in the rear, spare tire, and all kinds of metal, glass, carpet, sound deadening, and stuff.
Plus the front tires are closer to the front of the truck then the rear tires are to the rear of the truck. Just the tire positions put more weight on the rear wheels.
Fleet Mechanic
Joined: Aug 2010
Posts: 1,458
Likes: 156
From: Sedalia, CO
TrdLtly, what does your sticker say about tire pressure? The PSD is heavier, for sure, but I bet the front axle rating is the same, and so would be the recommended tire pressure. Can you take a look and prove me right, or wrong?
Mark
Mark
TreadLightly
Joined: Oct 2006
Posts: 1,608
Likes: 0
From: SE Missouri
PO peeled the door decal and so I can't read any of it. It got scrambled. Some else will have to give input on that. I had a picture of my '04 F350, but can't find it.
Hotshot
Joined: May 2005
Posts: 13,484
Likes: 42
From: Stevens Point, WI
A 7.3 is 900-1000 pounds. A sterling rear end I read is 333 pounds. There is quite a bit of weight on the rear tires of an excursion.
Posting Guru
Joined: Aug 2007
Posts: 2,440
Likes: 1
A few months ago, I took the Excursion to the scales and she weighed at 6780lbs with 3200 lbs in the front and 3580lbs in the rear. Like I said, I have a 5.4 2WD. It is likely that a 4WD diesel would bias the weight distribution A LOT to the front. And I agree with everything Snow said.
Hotshot
Joined: May 2005
Posts: 13,484
Likes: 42
From: Stevens Point, WI
A few months ago, I took the Excursion to the scales and she weighed at 6780lbs with 3200 lbs in the front and 3580lbs in the rear. Like I said, I have a 5.4 2WD. It is likely that a 4WD diesel would bias the weight distribution A LOT to the front. And I agree with everything Snow said.
Do you know how much fuel you had then? I agree with a diesel and 4wd it would be more weight on the front than back. With your numbers I would think like my 2wd diesel it is pretty even front and back. Personally I run the lower pressure in the front because it dampens the road from the steering a bit. 80 in the rear I guess because I tow stuff all the time plus I always have about 200 pounds or more of stuff in the back.
Posting Guru
Joined: Aug 2007
Posts: 2,440
Likes: 1
Do you know how much fuel you had then? I agree with a diesel and 4wd it would be more weight on the front than back. With your numbers I would think like my 2wd diesel it is pretty even front and back. Personally I run the lower pressure in the front because it dampens the road from the steering a bit. 80 in the rear I guess because I tow stuff all the time plus I always have about 200 pounds or more of stuff in the back.
Fleet Mechanic
Joined: Aug 2010
Posts: 1,458
Likes: 156
From: Sedalia, CO
A few months ago, I took the Excursion to the scales and she weighed at 6780lbs with 3200 lbs in the front and 3580lbs in the rear. Like I said, I have a 5.4 2WD. It is likely that a 4WD diesel would bias the weight distribution A LOT to the front. And I agree with everything Snow said.
Mark
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Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
A few months ago, I took the Excursion to the scales and she weighed at 6780lbs with 3200 lbs in the front and 3580lbs in the rear. Like I said, I have a 5.4 2WD. It is likely that a 4WD diesel would bias the weight distribution A LOT to the front. And I agree with everything Snow said.
Post Fiend
Joined: Mar 2009
Posts: 11,798
Likes: 14
From: Mt. Shasta California
But the OP and I have a 2000 4WD v-10. I run the same pressure front and back and only tow 1000 pounds sometimes.
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,606
Likes: 149
From: SE Georgia
if the prior owner drove on them alot, the sidewalls are likely damaged. that is too low a pressure for the weight of an X.
Read up on the Exploder/Firestone incidents 10-12yrs back. People were driving with low tire pressures in hot weather. it caused the tire to delaminate and faile
I personally would start at 50 psi in the tires and go from there. Just monitor tread wear and adjust as necessary. The door stick is utterly useless now anyways. It is only worth a darn when running the exact same tire and size as the X came from the factory.
Hotshot
Joined: May 2005
Posts: 13,484
Likes: 42
From: Stevens Point, WI
And not just fail, but fail with an E!
