Truck Hopping-2011F250 6.7 - Ford Powerstroke Diesel Forum
Suspension & Steering Discuss OEM & aftermarket suspension, lifts, air ride suspension, shocks, steering components, etc.

Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-02-2013, 03:16 PM
Powerstroke.org Rookie
 

Join Date: Apr 2011
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Truck Hopping-2011F250 6.7

I put on a 2" coil spacer and the new block in the rear. I got the dreaded death wobble and was told to get rid of the Michelin stock tires, put on a ICON adjustable pan head track bar, new Toyo AT II 295/60/R20 on stock rims and the caster shims? Running 60psi front and rear and the dang truck seems to be "hopping". Truck alignment seems perfect, no swaying or vibration in the wheel but on the highway on some roads, the truck seems to hop? Took the tires back and had them balanced and they are still perfectly balanced. Not sure what to do!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 12-02-2013, 03:19 PM
Don't you worry about it

 

Join Date: Jan 2008
Location: North Carolina
Posts: 5,553
Thanks: 2
Thanked 57 Times in 51 Posts
Feedback Score: 0 reviews
at around 44-46 MPH? Crew cab short bed?
Reply With Quote Quick reply to this message
  #3  
Old 12-02-2013, 03:25 PM
Powerstroke.org Rookie
 

Join Date: Apr 2011
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Crew cab FX4. I notice it the most on the interstate as I am rolling at 50 plus and even deaccelerating. Seems just a little better from dropping air pressure from 65 down to 60 but I really do not want to go lower. I thought about getting ICON replacement springs and their Bilstein 5100 shocks. Soooo frustrated! I had some Toyo ATII's I tried first which were a little wider but shorter but did not fit well on the stock rims and I felt like the front end was floating. I love these tires! Thank You so much for you and anyone else that can help!

Last edited by baja25sst; 12-02-2013 at 03:28 PM.
Reply With Quote Quick reply to this message
  #4  
Old 12-02-2013, 03:28 PM
Don't you worry about it

 

Join Date: Jan 2008
Location: North Carolina
Posts: 5,553
Thanks: 2
Thanked 57 Times in 51 Posts
Feedback Score: 0 reviews
Yea I run my tires at about 50 in the back and 55 in the front I think but I have a steady bounce at 44-46 all the time and a ton of CCSB trucks do that for some reason. Do you have a one piece drive shaft?
Reply With Quote Quick reply to this message
  #5  
Old 12-02-2013, 03:34 PM
Powerstroke.org Rookie
 

Join Date: Apr 2011
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I have whatever is factory which I assume that is a single solid drive shaft. It never did this before the new tires and track bar with just the stock Michelin tires. Rode like a DREAM! (but again, I did this all because of the death wobble experience I had). Again, thinking of going with Icon coil and their schocks and see what happens.
Reply With Quote Quick reply to this message
  #6  
Old 12-02-2013, 03:50 PM
Don't you worry about it

 

Join Date: Jan 2008
Location: North Carolina
Posts: 5,553
Thanks: 2
Thanked 57 Times in 51 Posts
Feedback Score: 0 reviews
did you have the tires road force balanced?
Reply With Quote Quick reply to this message
  #7  
Old 12-02-2013, 04:08 PM
Member
 

Join Date: Aug 2013
Location: Southern California
Posts: 63
Thanks: 0
Thanked 2 Times in 2 Posts
Feedback Score: 0 reviews
In my experience the wider tires seem to bounce more, air pressure seems to play a factor as well. I run my 37's with 40psi front and 35psi rear, I only air up to max psi when loaded or towing.
Reply With Quote Quick reply to this message
  #8  
Old 12-02-2013, 04:13 PM
Powerstroke.org Rookie
 

Join Date: Apr 2011
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Yes, I sure did. These tires are like barely barely wider than the stock Michelins so that is why I went to them plus I did not want any road noise or crazy tread. These are 10 ply load range E 80psi tires! The guys up in Atlant at 4wd parts said that I could drop the air even more and never have an issue driving or towing but I did not do all this to have to make these type of changes. I bet ya that my Michelin stock tires do not do this!

Last edited by baja25sst; 12-02-2013 at 04:23 PM.
Reply With Quote Quick reply to this message
  #9  
Old 12-03-2013, 07:05 AM
Powerstroke.org Sponsor
 

Join Date: Oct 2010
Location: Traverse City, MI
Posts: 1,115
Thanks: 41
Thanked 40 Times in 37 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by baja25sst View Post
Yes, I sure did. These tires are like barely barely wider than the stock Michelins so that is why I went to them plus I did not want any road noise or crazy tread. These are 10 ply load range E 80psi tires! The guys up in Atlant at 4wd parts said that I could drop the air even more and never have an issue driving or towing but I did not do all this to have to make these type of changes. I bet ya that my Michelin stock tires do not do this!
Your stock Michelins has thinner sidewalls and less air volume in them. On bigger E-Rated tires like this you need to run less air pressure than you would on smaller stock tires. Like others have said I would drop the fronts down to around 45 and the rears down to 35.

Since you lifted the truck and are still running stock shocks (which may be too short) the shocks are having hard tires controlling the heavier, stiffer, overinflated tires. A combination of lower pressure and possible better shocks should calm things down assuming that there aren't other problems at play.

Think of it like a 6 year old boy trying to dribble an oversized, overinflated basketball. That is what your suspension is trying to do right now.
Reply With Quote Quick reply to this message
  #10  
Old 12-03-2013, 08:58 AM
Powerstroke.org Rookie
 

Join Date: Apr 2011
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I have brand new fox schocks that were put on to work with the new lift kit. Won't dropping this much air also kill my gas mileage?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 05:38 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors