OK I know these "my buddy" posts are a pain but my truck is running just great. so I have questions about his.


2015 F350, bought used. had contintental tires, he would get stuck turning around in his yard with his 5th wheel toy hauler.
So he changes tires to a beefier tire, better look, more aggressive. I believe he bought hancook RF-10, stayed same size, same load range. Hes having problems , says the truck rides absolutely awful, feels like the back end is bouncing all over, even over the slightest bump at all. now it didn't do this till the tire change. So he went back to tire place they told him 2 tires were out of balance, he only had maybe 200 miles since new. they balanced them he went home. thought they felt ok. but now yesterday it seems to be bouncing all over again, hes about to just go buy another set of tires, possibly Nitto terra grappler. is it worth the money to just get a different set or is the "norm" for a dually with this type of tire?

 

There is a TSB for the hopping of the rear end but only applies to the trucks with long wheel base and factory trailer hitch. May not apply to his truck.

TSB 16-0087

CREW CAB PICKUP -8 FOOT BOX -VIBRATION/HOP -68-112 KM/H (42-70 MPH)-FACTORY TRAILER HITCH

FORD:
2011 -2016 F-Super Duty
ISSUE
Some 2011-2016 F-Super Duty crew cab pickup vehicles equipped with an 8 foot box and a factory trailer hitch may exhibit a vertical vibration, often described as hopping, from 68-112 Km/h (42-70 MPH).
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
1. Does the customer describe a vibration, which may be described as hopping, at approximately 68-110 Km/h (42-70 MPH)?
a.
Yes -proceed to Step 2.
b.
No -this article does not apply. Refer to Workshop Manual (WSM), Section 100-04 for normal diagnostics.
2. Does the vehicle have a cage damper mounted to the factory trailer hitch on the driver side? (Figure 1)
a.
Yes -this article does not apply. Refer to WSM, Section 100-04 for normal diagnostics.
b.
No -proceed to Step 3.
3. Remove the wiring connector on the driver side of the trailer hitch. (Figure 2)
4. Locate in the driver side plate of the trailer hitch the following holes. (Figure 3)
a. Clearance hole 17.6 mm (11/16"). The clearance hole will be used for the cage damper rubber pad. (Figure 3A)
b. Three mounting holes 14.6 mm (9/16"). (Figure 38)
TB10879A
Figure 3 - Article 16-0087
5. Mount the cage damper and install the bolts. Tighten to 63 Nm (46 Ib-ft). (Figure 4)

TB10880A
Figure 4 - Article 16-0087
PART NUMBER PART NAME
9C3Z-5DOO8-8 Damper Assembly
W706496-S439 80lt (3 Req)

PAGE2

TSB 16-0087 (Continued)

OPERATION DESCRIPTION TIME
160087A 2011-2016 F-Super Duty: Install Cage Damper Following The Service
Procedure (Do Not Use With Any Other Labor Operations) (Do Not Use
With Any Other Labor Operations Except B Or C)
0.4 Hr.
160087B 2011-2016 F-Super Duty: Extra Time To R&I Fuel Shield To Access
Lifting Points (Do Not Use With Any Other Labor Operations Except A)
0.1 Hr.
160087C 2011-2016 F-Super Duty FX4: Extra Time To R&I Fuel Shield To Access
Lifting Points (Do Not Use With Any Other Labor Operations Except A)
0.3 Hr.

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.

DEALER CODING IBASIC PART NO. CONDITION CODE 50008 42

PAGE3

 

sounds like an out of round tire, which would be a tire warranty thing.


I am running cooper discovery at AT3 on mine.


I had one out of round as well. Put in on the tire machine and pay attention to the rim. If the rim is ok then pay attention to the tread on the tire and watch it as it spins.