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Rough Ride on Smooth Road
Just bought a 2011 F250 Lariat 6.7 Diesel Fully Loaded has FX4 Package and 75R18E Continental contitrac TR Tires. This thing feels like I am driving down a bumpy road even when I am on a newly paved Highway. 1700 miles on the truck. Today I put 500 lbs. in the bed and went down the interstate, back end fells fine but rough ride still there and seems to be different at different speeds. I then went to the Tire Dealer and asked them to road force balance the tires. I asked them to check them all first for a before and after. They put the them on thier road force balancing machine and said all of the tires were perfect and no need to change anything, only the driver side front was out .5 of an ounce. They were at 60psi before I pulled in and I had them put them all at 65psi.
After further test driving it seems the roughness is speed related and is worse between 40mph and 45mph in any gear. I was doing 40 in 6 then i dropped it to 5 then 4 and it stayed constant rough ride. I even had a friend drive it and he said the same thing, worse at 45mph
I drove at speed down one of the bumpiest roads around and the truck handled great.
This rough ride thing is killing me. I will take it back to the dealer tomorrow but I am afraid they will try to downplay it.
Could it be a slipped belt? or out of balance drive shaft? or tranny issue? Any ideas would be appreciated. Thank You.
Last edited by PaleRider555; 06-12-2011 at 07:35 PM.