f 350 bouncing on freeway
Posting Guru
Joined: Feb 2007
Posts: 1,146
Likes: 3
From: Bradenton FL
Ditto on running lower tire pressure, ive had this expansion heat blow out situation happen to me @ 75mph, drivers front, and dont wish it on anyone. Im lucky not i didnt get killed ors someone else or the truck destroyed.
Tuned
Joined: Sep 2000
Posts: 417
Likes: 7
From: Olympic Peninsula, WA USA
Tire air pressure will make a big difference in ride quality. There's no need for 70 or 80 psi in rear tires on an unloaded F350. I only run 35 psi in my rear duals and even that is too much based on tire wear, but it's the lowest pressure on the manufacturers tire inflation table. For the best traction, wear and ride you should set you tire pressures based on actual tire loading using a inflation table.
No fear of blow-outs if you use the tire manufacturers data. The problem with the SUV blowouts were Ford telling people to run minimal pressure in the tires and then people never checking their pressure leading to underinflated tires.
I have Firestone airbags on my truck, but they won't do anything for ride quality except make it worse if they are pumped up with no load. Airbags only help level the truck under load and help stabilize it under load.
I did add Rancho RS9000 adjustable shocks to my truck and they are great for improved ride. For unloaded driving, I set the dampening low for a cushy ride. Then when I load my huge slide-in camper, I crank up the dampening for better sway control. These shocks ride softer than stock shocks when set on soft settings.
No fear of blow-outs if you use the tire manufacturers data. The problem with the SUV blowouts were Ford telling people to run minimal pressure in the tires and then people never checking their pressure leading to underinflated tires.
I have Firestone airbags on my truck, but they won't do anything for ride quality except make it worse if they are pumped up with no load. Airbags only help level the truck under load and help stabilize it under load.
I did add Rancho RS9000 adjustable shocks to my truck and they are great for improved ride. For unloaded driving, I set the dampening low for a cushy ride. Then when I load my huge slide-in camper, I crank up the dampening for better sway control. These shocks ride softer than stock shocks when set on soft settings.
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
Originally Posted by harald
No fear of blow-outs if you use the tire manufacturers data. The problem with the SUV blowouts were Ford telling people to run minimal pressure in the tires and then people never checking their pressure leading to underinflated tires.
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Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
Originally Posted by BmanRRT
What are u doing that I am not?
05 F350 DRW....bouncy as all hell
05 F350 DRW....bouncy as all hell
has leer topper
60 psi rear 80 psi front
Hotshot
Joined: Aug 2006
Posts: 17,398
Likes: 317
From: Whittier, CA
Originally Posted by rbaker6336
would think at 45 psi at highway speeds the tires would over heat and eventually come apart especially on front
The Goodyear chart shows a load rating of 2255 lbs when inflated to 45 PSI for a total of 9,020 lbs on four tires. On a bone stock vehicle, unloaded, that weights what, < 7,000 lbs? I know it's not the same front and rear, and I'm still thinking about that. Might should bump up the front to 55 PSI for a rating of 2,595/tire. I don't think that will have much affect on the ride, whereas overinflating the rear certainly does.
I understand what you are saying, underinflating is VERY dangerous. But inflating correctly for the load you are carrying is not.
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
your truck must be lighter than mine 8400 empty+topper maybe 200lbs
my rear tires wear flat a 60 lbs and rides great and with PSD on front wouldn't think of running less than 80 lbs
and don't want to ave to worry bout airing tires if I wat to haul or tow something
my truck sets on ready for what I want or need to do
my rear tires wear flat a 60 lbs and rides great and with PSD on front wouldn't think of running less than 80 lbs
and don't want to ave to worry bout airing tires if I wat to haul or tow something
my truck sets on ready for what I want or need to do
Fleet Mechanic
Joined: Nov 2004
Posts: 1,857
Likes: 5
From: Northern CA
I run 60 psi all the way around and it has helped with the bucking bronc syndrome. Left lane on the freeway seems the worst around norcal.
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Postmaster
Joined: Jan 2005
Posts: 3,461
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From: Saskatoon, SK
Weigh your axles separately and use the inflation guides provided by the tire manufacturer. I run 55 psi in the front all the time on my dually and 35 psi empty and 45 psi loaded on the rears. My truck rides smooth for a big truck and my tires last long.
Senior User
Joined: Feb 2002
Posts: 208
Likes: 0
From: Stockton USA
rbaker6336
I guess I'm missing something here...you have a 2X4 with swing arms and coil springs up front = good ride...
Those of us with 4x4s, solid beam front axles and leaf springs (99-04) are 'blessed' with the harsh ride! 2005 brought about the coil spring suspensions up front on the 4x4s, and helped to smooth out the ride, somewhat...a better way to go...
Till I can upgrade to a newer truck, I'll just keep bouncing down the road! My new tires, adjustable shocks, and a big heavy Lance camper on the back help, though!
I guess I'm missing something here...you have a 2X4 with swing arms and coil springs up front = good ride...
Those of us with 4x4s, solid beam front axles and leaf springs (99-04) are 'blessed' with the harsh ride! 2005 brought about the coil spring suspensions up front on the 4x4s, and helped to smooth out the ride, somewhat...a better way to go...
Till I can upgrade to a newer truck, I'll just keep bouncing down the road! My new tires, adjustable shocks, and a big heavy Lance camper on the back help, though!
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