Jopopsy wrote:
j-d wrote:
EDIT: 4600-lbs and 65-PSI are for 2007 and older E350/450's. Newer ones take higher since GAWR-F is 5000-lbs. 70-PSI if I remember correctly, but still not 80-PSI. A simple 5-PSI change will improve ride and tracking.
The placard will read 75 for the front axle.
Dropping it to 70 helped a good deal. I'd love to try 65 but I need it weighed.
You haven't weighed that thing yet. :B
Our rigs are similar, although yours is a little heavier, but for what it's worth, mine fully loaded, with two, not particularly light people in the front seats, weighs 4,120#. According to Michelin 55 psi is enough for 4,120#. I now run the front tires at 65#. I previously ran them at 60#.